短信

+{include file="common/head"/}
+<div class="admin-main layui-anim layui-anim-upbit">
+    <fieldset class="layui-elem-field layui-field-title">
+        <legend>{:$title}</legend>
+    </fieldset>
+    <div class="demoTable">
+        商家：
+        <div class="layui-input-inline">
+            <input class="layui-input" name="key" id="key"  placeholder="{:lang('pleaseEnter')}店铺名称" autocomplete="off">
+        </div>
+        日期范围：
+        <div class="layui-input-inline" >
+            <input type="text" style = "width:300px"; class="layui-input" id="time" placeholder="默认为当天的充值情况">
+        </div>
+        商家来源：
+        <div class="layui-input-inline layui-form">
+                <div class="layui-input-8">
+                    <select name="class" id="channel" lay-filter="myselect">
+                            <option value="-1">全部</option>
+                            <option value="1" selected>合作</option>
+                            <option value="2">推广</option>
+                            <option value="3">测试</option>
+                    </select>
+                </div>
+        </div>
+        
+        <button class="layui-btn"  id="search" data-type="reload">查询统计</button>
+    </div>
+    <table class="layui-table" id="list" lay-filter="list"></table>
+</div>
+<script type="text/html" id="toolbarDemo">
+</script>
+{include file="common/foot"/}
+<script>
+    layui.use(['table','form','laydate'], function() {
+        var table = layui.table,laydate = layui.laydate,$ = layui.jquery;
+        console.log(layui);
+        var tableIn = table.render({
+            elem: '#list',
+            url: '{:url("getsellersmslist")}',
+            method: 'post',
+            title: '短信充值流水',
+            page:true,
+            toolbar: '#toolbarDemo',
+            cols: [[
+                {field: 'id', title: '{:lang("id")}',width:70, fixed: true},
+                {field: 'sellername', align: 'center',title: '店铺名字'},
+                {field: 'package_name', title: '套餐'},
+                {field: 'total', title: '充值总数'},
+                {field: 'price', title: '金额'},
+                {field: 'channel', align: 'center', title: '充值渠道'},
+                {field: 'desc', align: 'center', title: '充值备注'},
+                {field: 'paystatus', align: 'center',title: '充值状态'},
+                {field: 'bdate', align: 'center',title: '购买时间', sort: true},
+                {field: 'cdate', align: 'center',title: '记录时间', sort: true},
+            ]],
+            done: function(res, curr, count){
+
+            }
+            ,id: 'testReload'
+            ,page: true
+            ,limit:10
+        });
+
+        //日期时间范围
+        laydate.render({
+            elem: '#time'
+            ,type: 'datetime'
+            ,range: true
+        });
+
+        //搜索
+        $('#search').on('click', function() {
+            //关键字
+            var key = $('#key').val();
+            
+            var time = $('#time').val();
+            console.log(time);
+            //商家来源
+            var channel = $('#channel').val();
+            console.log(channel);
+            
+            //传参
+            tableIn.reload({ page: {page: 1},where: {key: key,time: time,channel: channel}});
+        });
+
+        var $ = layui.$, active = {
+            reload: function(){
+              var key = $('#key');
+                //执行重载
+                table.reload('testReload', {
+                page: {
+                  curr: 1 //重新从第 1 页开始
+                }
+                ,where: {
+                  key: {
+                    id: key.val()
+                  }
+                }
+                });
+            }
+        };
+    })
+</script>

+/*
+* @version: 2.0
+* @Author:  tomato
+* @Date:    2018-5-5 11:29:57
+* @Last Modified by:   tomato
+* @Last Modified time: 2018-5-26 18:08:43
+*/
+//多选下拉框
+layui.define(['jquery', 'layer'], function(exports){
+	var MOD_NAME = 'selectM';
+	var $ = layui.jquery,layer=layui.layer;
+	var obj = function(config){
+		this.disabledIndex =[];
+		//当前选中的值名数据
+		this.selected = [];
+		//当前选中的值
+		this.values =[];
+		//当前选中的名称
+		this.names =[];
+		
+		//初始化设置参数
+		this.config = {
+			//选择器id或class
+			elem: '',
+			//候选项数据[{id:"1",name:"名称1",status:0},{id:"2",name:"名称2",status:1}]
+			data: [],			
+	
+			//默认选中值
+			selected: [],
+
+			//空值项提示，支持将{max}替换为max			
+			tips: '请选择 最多 {max} 个',				
+
+			//最多选中个数，默认5
+			max : 5,
+			
+			//选择框宽度
+			width:null,
+			
+			//值验证，与lay-verify一致
+			verify: '',	
+
+			//input的name 不设置与选择器相同(去#.)
+			name: '',
+			
+			//值的分隔符
+			delimiter: ',',
+			
+			//候选项数据的键名 status=0为禁用状态
+			field: {idName:'id',titleName:'name',statusName:'status'}
+		}
+
+		this.config = $.extend(this.config,config);
+		//创建选项元素
+		this.createOption = function(){
+				var o=this,c=o.config,f=c.field,d = c.data;
+				var s = c.selected;
+				$E = $(c.elem);
+				var tips = c.tips.replace('{max}',c.max);
+				var inputName = c.name=='' ? c.elem.replace('#','').replace('.','') : c.name;
+				var verify = c.verify=='' ? '' : 'lay-verify="'+c.verify+'" ';
+				var html = '';
+				html +=	'<div class="layui-unselect layui-form-select">';
+				html +=			'<div class="layui-select-title">';
+				html +=				'<input '+verify+'name="'+inputName+'" type="text" readonly="" class="layui-input layui-unselect">';
+				html +=			'</div>';
+				html +=			'<div class="layui-input multiple">';
+				html +=			'</div>';
+				html +=			'<dl class="layui-anim layui-anim-upbit">';
+				html +=				'<dd lay-value="" class="layui-select-tips">'+tips+'</dd>';
+				for(var i=0;i<d.length;i++){
+					var disabled1='',disabled2='';
+					if(d[i][f.statusName]==0){
+						o.disabledIndex[d[i][f.idName]] = d[i][f.titleName];
+						disabled1 = d[i][f.statusName]==0 ? 'layui-disabled' : '';
+						disabled2 = d[i][f.statusName]==0 ? ' layui-checkbox-disbaled layui-disabled' : '';						
+					}
+					html +='<dd lay-value="'+d[i][f.idName]+'" class="'+disabled1+'">';
+					html +=		'<div class="layui-unselect layui-form-checkbox'+disabled2+'" lay-skin="primary">';
+					html +=			'<span>'+d[i][f.titleName]+'</span><i class="layui-icon">&#xe605;</i>';
+					html +=		'</div>';
+					html +='</dd>';
+				}
+				html +=			'</dl>';
+				html +=		'</div>';				
+				$E.html(html);
+		}
+
+		//设置选中值
+		this.set = function(selected){
+			var o=this,c=o.config;
+			var s = typeof selected=='undefined' ? c.selected : selected;
+			$E = $(c.elem);
+			$E.find('.layui-form-checkbox').removeClass('layui-form-checked');			
+			$E.find('dd').removeClass('layui-this');
+			//为默认选中值添加类名
+			var max = s.length>c.max ? c.max : s.length;
+			for(var i=0;i<max;i++){
+				if(s[i] && !o.disabledIndex.hasOwnProperty(s[i])){
+					$E.find('dd[lay-value='+s[i]+']').addClass('layui-this');	
+				}
+			}
+			$E.find('dd.layui-this').each(function(){
+				$(this).find('div').addClass('layui-form-checked');
+			});	
+			o.setSelected(selected);	
+		}
+	
+		//设置选中值 每次点击操作后执行
+		this.setSelected = function(first){
+			var o=this,c=o.config,f=c.field;
+			$E = $(c.elem);
+			var values=[],names=[],selected = [],spans = [];
+			var items = $E.find('dd.layui-this');
+			if(items.length==0){
+				var tips = c.tips.replace('{max}',c.max);
+				spans.push('<span class="tips">'+tips+'</span>');
+			}
+			else{
+				items.each(function(){
+					$this = $(this);
+					var item ={};
+					var v = $this.attr('lay-value');
+					var n = $this.find('span').text();
+					item[f.idName] = v;
+					item[f.titleName] = n;
+					values.push(v);
+					names.push(n);
+					spans.push('<a href="javascript:;"><span lay-value="'+v+'">'+n+'</span><i class="layui-icon">&#x1006;</i></a>');
+					selected.push(item);
+				});
+			}
+			spans.push('<i class="layui-edge" style="pointer-events: none;"></i>');
+			$E.find('.multiple').html(spans.join(''));				
+			$E.find('.layui-select-title').find('input').each(function(){
+				if(typeof first=='undefined'){
+					this.defaultValue = values.join(c.delimiter);
+				}
+				this.value = values.join(c.delimiter);
+			});
+			
+			var h = $E.find('.multiple').height()+14;
+			$E.find('.layui-form-select dl').css('top',h+'px');
+			o.values=values,o.names=names,o.selected = selected;
+		}
+		//ajax方式获取候选数据
+		this.getData = function(url){
+			var d;
+			$.ajax({
+				url:url,
+				dataType:'json',
+				async:false,
+				success:function(json){
+					d=json;
+				},
+				error: function(){
+					console.error(MOD_NAME+' hint：候选数据ajax请求错误 ');
+					d = false;
+				}
+			});
+			return d;
+		}
+	};	
+	//渲染一个实例
+  obj.prototype.render = function(){
+		var o=this,c=o.config,f=c.field;
+		$E = $(c.elem);
+		if($E.length==0){
+			console.error(MOD_NAME+' hint：找不到容器 ' +c.elem);
+			return false;
+		}
+		if(Object.prototype.toString.call(c.data)!='[object Array]'){
+			var data = o.getData(c.data);
+			if(data===false){
+				console.error(MOD_NAME+' hint：缺少分类数据');
+				return false;
+			}
+			o.config.data =  data;
+		}
+
+		//给容器添加一个类名
+		$E.addClass('lay-ext-mulitsel');
+		if(/^\d+$/.test(c.width)){
+			$E.css('width',c.width+'px');
+		}
+		//添加专属的style
+		if($('#lay-ext-mulitsel-style').length==0){
+		var style = '.lay-ext-mulitsel .layui-form-select dl dd div{margin-top:0px!important;}.lay-ext-mulitsel .layui-form-select dl dd.layui-this{background-color:#fff}.lay-ext-mulitsel .layui-input.multiple{line-height:auto;height:auto;padding:4px 10px 4px 10px;overflow:hidden;min-height:38px;margin-top:-38px;left:0;z-index:99;position:relative;background:#fff;}.lay-ext-mulitsel .layui-input.multiple a{padding:2px 5px;background:#5FB878;border-radius:2px;color:#fff;display:block;line-height:20px;height:20px;margin:2px 5px 2px 0;float:left;}.lay-ext-mulitsel .layui-input.multiple a i{margin-left:4px;font-size:14px;} .lay-ext-mulitsel .layui-input.multiple a i:hover{background-color:#009E94;border-radius:2px;}.lay-ext-mulitsel .danger{border-color:#FF5722!important}.lay-ext-mulitsel .tips{pointer-events: none;position: absolute;left: 10px;top: 10px;color:#757575;}';
+			$('<style id="lay-ext-mulitsel-style"></style>').text(style).appendTo($('head'));
+		};
+		
+		//创建选项
+		o.createOption();
+		//设置选中值
+		o.set();
+		
+		//展开/收起选项
+		$E.on('click','.layui-select-title,.multiple,.multiple.layui-edge',function(e){
+			//隐藏其他实例显示的弹层
+			$('.lay-ext-mulitsel').not(c.elem).removeClass('layui-form-selected');
+			if($(c.elem).is('.layui-form-selected')){
+				$(c.elem).removeClass('layui-form-selected');
+				
+				$(document).off('click',mEvent);
+			}
+			else{
+				$(c.elem).addClass('layui-form-selected');
+				
+				$(document).on('click',mEvent=function(e){
+					if(e.target.id!==c.elem && e.target.className!=='layui-input multiple'){
+						$(c.elem).removeClass('layui-form-selected');			
+						$(document).off('click',mEvent);
+					}
+				});	
+			}
+		});
+			
+		//点击选项
+		$E.on('click','dd',function(e){
+			var _dd = $(this);
+			if(_dd.hasClass('layui-disabled')){
+				return false;
+			}
+			//点 请选择
+			if(_dd.is('.layui-select-tips')){
+				_dd.siblings().removeClass('layui-this');
+				$(c.elem).find('.layui-form-checkbox').removeClass('layui-form-checked');
+			}
+			//取消选中
+			else if(_dd.is('.layui-this')){
+				_dd.removeClass('layui-this');
+				_dd.find('.layui-form-checkbox').removeClass('layui-form-checked');
+				e.stopPropagation();
+			}
+			//选中
+			else{
+				if(o.selected.length >= c.max){
+					$(c.elem+' .multiple').addClass('danger');
+					layer.tips('最多只能选择 '+c.max+' 个', c.elem+' .multiple', {
+						tips: 3,
+						time: 1000,
+						end:function(){					
+							$(c.elem+' .multiple').removeClass('danger');
+						}
+					});
+					return false;
+				}
+				else{
+					_dd.addClass('layui-this');
+					_dd.find('.layui-form-checkbox').addClass('layui-form-checked');
+					e.stopPropagation();					
+				}
+			}
+			
+			o.setSelected();
+		});
+		
+		//删除选项
+		$E.on('click','a i',function(e){
+			var _this = $(this).prev('span');
+			var v = _this.attr('lay-value');
+			if(v){
+				var _dd = $(c.elem).find('dd[lay-value='+v+']');
+				_dd.removeClass('layui-this');
+				_dd.find('.layui-form-checkbox').removeClass('layui-form-checked');
+			}
+			o.setSelected();
+			_this.parent().remove();
+			e.stopPropagation();
+			
+		});
+		
+		//验证失败样式
+		$E.find('input').focus(function(){
+			$(c.elem+' .multiple').addClass('danger');
+			setTimeout(function(){
+				$(c.elem+' .multiple').removeClass('danger');
+			},3000);
+		});
+	}
+	
+	//输出模块
+	exports(MOD_NAME, function (config) {
+		var _this = new obj(config);
+		_this.render();
+		return _this;
+  });
+});

+/*
+* @version: 1.2
+* @Author:  tomato
+* @Date:    2018-4-24 22:56:00
+* @Last Modified by:   tomato
+* @Last Modified time: 2018-5-26 18:08:43
+*/
+//无限级下拉框
+layui.define(['jquery', 'form'], function(exports){
+		var MOD_NAME = 'selectN';
+		var $ = layui.jquery;
+		var form = layui.form;
+    var obj = function(config){
+		//当前选中数据值名数据
+		this.selected =[];
+		//当前选中的值
+		this.values = [];
+		//当前选中的名
+		this.names = [];
+		//当前选中最后一个值
+		this.lastValue = '';
+		//当前选中最后一个值
+		this.lastName = '';		
+		//是否已选
+		this.isSelected = false;
+		//初始化配置
+		this.config = {
+			//选择器id或class
+			elem: '',
+			//无限级分类数据
+			data: [],
+			//默认选中值
+			selected: [],
+			//空值项提示，可设置为数组['请选择省','请选择市','请选择县']
+			tips: '请选择',	
+			//是否允许搜索，可设置为数组[true,true,true]
+			search:false,
+			//选择项宽度，可设置为数组['80','90','100']
+			width:null,	
+			//为真只取最后一个值
+			last: false,
+			//值验证，与lay-verify一致
+			verify: '',		
+			//事件过滤器，lay-filter名
+			filter: '',
+			//input的name 不设置与选择器相同(去#.)
+			name: '',
+			//数据分隔符
+			delimiter: ',',		
+			//数据的键名 status=0为禁用状态
+			field:{idName:'id',titleName:'name',statusName:'status',childName:'children'},
+			//多表单区分 form.render(type, filter); 为class="layui-form" 所在元素的 lay-filter="" 的值 
+			formFilter: null
+		}
+		
+		//实例化配置
+		this.config = $.extend(this.config,config);
+
+		//“请选择”文字
+		this.setTips = function(){
+			var o = this,c = o.config;
+			if(Object.prototype.toString.call(c.tips)!='[object Array]'){
+				return c.tips;
+			}
+			else{
+				var i=$(c.elem).find('select').length;
+				return c.tips.hasOwnProperty(i) ? c.tips[i] : '请选择'; 
+			}
+		}
+
+		//设置是否允许搜索
+		this.setSearch = function(){
+			var o = this,c = o.config;
+			if(Object.prototype.toString.call(c.search)!='[object Array]'){
+				return c.search===true ? 'lay-search ' : ' ';
+			}
+			else{
+				var i=$(c.elem).find('select').length;
+				if(c.search.hasOwnProperty(i)){
+					return c.search[i]===true ? 'lay-search ' : ' ';
+				}
+			}
+			return ' ';
+		}
+
+		//设置是否允许搜索
+		this.setWidth = function(){
+			var o = this,c = o.config;
+			if(Object.prototype.toString.call(c.width)!='[object Array]'){
+				return /^\d+$/.test(c.width) ? 'style="width:'+c.width+'px;" ' : ' ';
+			}
+			else{
+				var i=$(c.elem).find('select').length;
+				if(c.width.hasOwnProperty(i)){
+					return /^\d+$/.test(c.width[i]) ? 'style="width:'+c.width[i]+'px;" ' : ' ';
+				}
+			}
+		}		
+			
+		//创建一个Select
+		this.createSelect = function(optionData){
+			var o = this,c = o.config,f=c.field;
+			var html = '';
+			html+= '<div class="layui-input-inline" '+o.setWidth()+'>';
+			html+= ' <select '+o.setSearch()+'lay-filter="'+c.filter+'">';
+			html+= '  <option value="">'+o.setTips()+'</option>';
+			for(var i=0;i<optionData.length;i++){
+				var disabled = optionData[i][f.statusName]==0 ? 'disabled="" ' : '';
+				html+= '  <option '+disabled+'value="'+optionData[i][f.idName]+'">'+optionData[i][f.titleName]+'</option>';
+			}
+			html+= ' </select>';
+			html+= '</div>';
+			return html;
+		};
+
+		//获取当前option的数据
+		this.getOptionData=function(catData,optionIndex){
+			var f = this.config.field;
+			var item = catData;
+			for(var i=0;i<optionIndex.length;i++){
+				if('undefined' == typeof item[optionIndex[i]]){
+					item = null;
+					break;      
+				}
+				else if('undefined' == typeof item[optionIndex[i]][f.childName]){
+					item = null;
+					break;
+				}
+				else{
+					item = item[optionIndex[i]][f.childName];
+				}
+			}
+			return item;
+		};
+
+		//初始化
+		this.set = function(selected){
+			var o = this,c = o.config;
+			$E = $(c.elem);
+			//创建顶级select
+			var verify = c.verify=='' ? '' : 'lay-verify="'+c.verify+'" ';
+			var html = '<div style="height:0px;width:0px;overflow:hidden"><input '+verify+'name="'+c.name+'"></div>';
+			html += o.createSelect(c.data);
+			$E.html(html);
+			selected = typeof selected=='undefined' ? c.selected : selected;
+			var index=[];
+			for(var i=0;i<selected.length;i++){
+				//设置最后一个select的选中值
+				$E.find('select:last').val(selected[i]);
+				//获取该选中值的索引
+				var lastIndex = $E.find('select:last').get(0).selectedIndex-1; 
+				index.push(lastIndex);
+				//取出下级的选项值
+				var childItem = o.getOptionData(c.data,index);
+				//下级选项值存在则创建select
+				if(childItem){
+					var html = o.createSelect(childItem);
+					$E.append(html);
+				}
+			}
+			form.render('select',c.formFilter);
+			o.getSelected();					
+		};
+		
+		//下拉事件
+		this.change = function(elem){
+			var o = this,c = o.config;
+			var $thisItem = elem.parent();
+			//移除后面的select
+			$thisItem.nextAll('div.layui-input-inline').remove();
+			var index=[];
+			//获取所有select，取出选中项的值和索引
+			$thisItem.parent().find('select').each(function(){
+				index.push($(this).get(0).selectedIndex-1);
+			});
+			
+			var childItem = o.getOptionData(c.data,index);
+			if(childItem){
+				var html = o.createSelect(childItem);
+				$thisItem.after(html);
+				form.render('select',c.formFilter);
+			}
+			o.getSelected();			
+		};
+
+		//获取所有值-数组 每次选择后执行
+		this.getSelected=function(){
+			var o = this,c = o.config;
+			var values =[];
+			var names =[];
+			var selected =[];
+			$E = $(c.elem);
+			$E.find('select').each(function(){
+				var item = {};
+				var v = $(this).val()
+				var n = $(this).find('option:selected').text();
+				item.value = v;
+				item.name = n;
+				values.push(v);
+				names.push(n);
+				selected.push(item);
+			});
+			o.selected =selected;			
+			o.values = values;
+			o.names = names;
+			o.lastValue = $E.find('select:last').val();
+			o.lastName = $E.find('option:selected:last').text();
+			
+			o.isSelected = o.lastValue=='' ? false : true;
+			var inputVal = c.last===true ? o.lastValue : o.values.join(c.delimiter);
+			$E.find('input[name='+c.name+']').val(inputVal);
+		};
+		//ajax方式获取候选数据
+		this.getData = function(url){
+			var d;
+			$.ajax({
+				url:url,
+				dataType:'json',
+				async:false,
+				success:function(json){
+					d=json;
+				},
+				error: function(){
+					console.error(MOD_NAME+' hint：候选数据ajax请求错误 ');
+					d = false;
+				}
+			});
+			return d;
+		}		
+		
+		
+	};
+
+	//渲染一个实例
+  obj.prototype.render = function(){
+		var o=this,c=o.config;
+		$E = $(c.elem);
+		if($E.length==0){
+			console.error(MOD_NAME+' hint：找不到容器 '+c.elem);
+			return false;
+		}
+		if(Object.prototype.toString.call(c.data)!='[object Array]'){
+			var data = o.getData(c.data);
+			if(data===false){
+				console.error(MOD_NAME+' hint：缺少分类数据');
+				return false;
+			}
+			o.config.data =  data;
+		}
+		
+		c.filter = c.filter=='' ? c.elem.replace('#','').replace('.','') : c.filter;
+		c.name = c.name=='' ? c.elem.replace('#','').replace('.','') : c.name;
+		o.config = c;
+		
+		//初始化
+		o.set();
+		
+		//监听下拉事件
+		form.on('select('+c.filter+')',function(data){
+			o.change($(data.elem));	
+		});
+		//验证失败样式
+		$E.find('input[name='+c.name+']').focus(function(){
+			var t = $(c.elem).offset().top;
+			$('html,body').scrollTop(t-200);			
+			$(c.elem).find('select:last').addClass('layui-form-danger');
+			setTimeout(function(){
+				$(c.elem).find('select:last').removeClass('layui-form-danger');
+			},3000);
+		});
+	}
+	
+	//输出模块
+	exports(MOD_NAME, function (config) {
+		var _this = new obj(config);
+		_this.render();
+		return _this;
+  });
+});

+<?php
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/');
+    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel
+{
+    /**
+     * Unique ID
+     *
+     * @var string
+     */
+    private $uniqueID;
+
+    /**
+     * Document properties
+     *
+     * @var PHPExcel_DocumentProperties
+     */
+    private $properties;
+
+    /**
+     * Document security
+     *
+     * @var PHPExcel_DocumentSecurity
+     */
+    private $security;
+
+    /**
+     * Collection of Worksheet objects
+     *
+     * @var PHPExcel_Worksheet[]
+     */
+    private $workSheetCollection = array();
+
+    /**
+     * Calculation Engine
+     *
+     * @var PHPExcel_Calculation
+     */
+    private $calculationEngine;
+
+    /**
+     * Active sheet index
+     *
+     * @var integer
+     */
+    private $activeSheetIndex = 0;
+
+    /**
+     * Named ranges
+     *
+     * @var PHPExcel_NamedRange[]
+     */
+    private $namedRanges = array();
+
+    /**
+     * CellXf supervisor
+     *
+     * @var PHPExcel_Style
+     */
+    private $cellXfSupervisor;
+
+    /**
+     * CellXf collection
+     *
+     * @var PHPExcel_Style[]
+     */
+    private $cellXfCollection = array();
+
+    /**
+     * CellStyleXf collection
+     *
+     * @var PHPExcel_Style[]
+     */
+    private $cellStyleXfCollection = array();
+
+    /**
+    * hasMacros : this workbook have macros ?
+    *
+    * @var bool
+    */
+    private $hasMacros = false;
+
+    /**
+    * macrosCode : all macros code (the vbaProject.bin file, this include form, code,  etc.), null if no macro
+    *
+    * @var binary
+    */
+    private $macrosCode;
+    /**
+    * macrosCertificate : if macros are signed, contains vbaProjectSignature.bin file, null if not signed
+    *
+    * @var binary
+    */
+    private $macrosCertificate;
+
+    /**
+    * ribbonXMLData : null if workbook is'nt Excel 2007 or not contain a customized UI
+    *
+    * @var null|string
+    */
+    private $ribbonXMLData;
+
+    /**
+    * ribbonBinObjects : null if workbook is'nt Excel 2007 or not contain embedded objects (picture(s)) for Ribbon Elements
+    * ignored if $ribbonXMLData is null
+    *
+    * @var null|array
+    */
+    private $ribbonBinObjects;
+
+    /**
+    * The workbook has macros ?
+    *
+    * @return boolean true if workbook has macros, false if not
+    */
+    public function hasMacros()
+    {
+        return $this->hasMacros;
+    }
+
+    /**
+    * Define if a workbook has macros
+    *
+    * @param boolean $hasMacros true|false
+    */
+    public function setHasMacros($hasMacros = false)
+    {
+        $this->hasMacros = (bool) $hasMacros;
+    }
+
+    /**
+    * Set the macros code
+    *
+    * @param string $MacrosCode string|null
+    */
+    public function setMacrosCode($MacrosCode = null)
+    {
+        $this->macrosCode=$MacrosCode;
+        $this->setHasMacros(!is_null($MacrosCode));
+    }
+
+    /**
+    * Return the macros code
+    *
+    * @return string|null
+    */
+    public function getMacrosCode()
+    {
+        return $this->macrosCode;
+    }
+
+    /**
+    * Set the macros certificate
+    *
+    * @param string|null $Certificate
+    */
+    public function setMacrosCertificate($Certificate = null)
+    {
+        $this->macrosCertificate=$Certificate;
+    }
+
+    /**
+    * Is the project signed ?
+    *
+    * @return boolean true|false
+    */
+    public function hasMacrosCertificate()
+    {
+        return !is_null($this->macrosCertificate);
+    }
+
+    /**
+    * Return the macros certificate
+    *
+    * @return string|null
+    */
+    public function getMacrosCertificate()
+    {
+        return $this->macrosCertificate;
+    }
+
+    /**
+    * Remove all macros, certificate from spreadsheet
+    *
+    */
+    public function discardMacros()
+    {
+        $this->hasMacros=false;
+        $this->macrosCode=null;
+        $this->macrosCertificate=null;
+    }
+
+    /**
+    * set ribbon XML data
+    *
+    */
+    public function setRibbonXMLData($Target = null, $XMLData = null)
+    {
+        if (!is_null($Target) && !is_null($XMLData)) {
+            $this->ribbonXMLData = array('target' => $Target, 'data' => $XMLData);
+        } else {
+            $this->ribbonXMLData = null;
+        }
+    }
+
+    /**
+    * retrieve ribbon XML Data
+    *
+    * return string|null|array
+    */
+    public function getRibbonXMLData($What = 'all') //we need some constants here...
+    {
+        $ReturnData = null;
+        $What = strtolower($What);
+        switch ($What){
+            case 'all':
+                $ReturnData = $this->ribbonXMLData;
+                break;
+            case 'target':
+            case 'data':
+                if (is_array($this->ribbonXMLData) && array_key_exists($What, $this->ribbonXMLData)) {
+                    $ReturnData = $this->ribbonXMLData[$What];
+                }
+                break;
+        }
+
+        return $ReturnData;
+    }
+
+    /**
+    * store binaries ribbon objects (pictures)
+    *
+    */
+    public function setRibbonBinObjects($BinObjectsNames = null, $BinObjectsData = null)
+    {
+        if (!is_null($BinObjectsNames) && !is_null($BinObjectsData)) {
+            $this->ribbonBinObjects = array('names' => $BinObjectsNames, 'data' => $BinObjectsData);
+        } else {
+            $this->ribbonBinObjects = null;
+        }
+    }
+    /**
+    * return the extension of a filename. Internal use for a array_map callback (php<5.3 don't like lambda function)
+    *
+    */
+    private function getExtensionOnly($ThePath)
+    {
+        return pathinfo($ThePath, PATHINFO_EXTENSION);
+    }
+
+    /**
+    * retrieve Binaries Ribbon Objects
+    *
+    */
+    public function getRibbonBinObjects($What = 'all')
+    {
+        $ReturnData = null;
+        $What = strtolower($What);
+        switch($What) {
+            case 'all':
+                return $this->ribbonBinObjects;
+                break;
+            case 'names':
+            case 'data':
+                if (is_array($this->ribbonBinObjects) && array_key_exists($What, $this->ribbonBinObjects)) {
+                    $ReturnData=$this->ribbonBinObjects[$What];
+                }
+                break;
+            case 'types':
+                if (is_array($this->ribbonBinObjects) &&
+                    array_key_exists('data', $this->ribbonBinObjects) && is_array($this->ribbonBinObjects['data'])) {
+                    $tmpTypes=array_keys($this->ribbonBinObjects['data']);
+                    $ReturnData = array_unique(array_map(array($this, 'getExtensionOnly'), $tmpTypes));
+                } else {
+                    $ReturnData=array(); // the caller want an array... not null if empty
+                }
+                break;
+        }
+        return $ReturnData;
+    }
+
+    /**
+    * This workbook have a custom UI ?
+    *
+    * @return boolean true|false
+    */
+    public function hasRibbon()
+    {
+        return !is_null($this->ribbonXMLData);
+    }
+
+    /**
+    * This workbook have additionnal object for the ribbon ?
+    *
+    * @return boolean true|false
+    */
+    public function hasRibbonBinObjects()
+    {
+        return !is_null($this->ribbonBinObjects);
+    }
+
+    /**
+     * Check if a sheet with a specified code name already exists
+     *
+     * @param string $pSheetCodeName  Name of the worksheet to check
+     * @return boolean
+     */
+    public function sheetCodeNameExists($pSheetCodeName)
+    {
+        return ($this->getSheetByCodeName($pSheetCodeName) !== null);
+    }
+
+    /**
+     * Get sheet by code name. Warning : sheet don't have always a code name !
+     *
+     * @param string $pName Sheet name
+     * @return PHPExcel_Worksheet
+     */
+    public function getSheetByCodeName($pName = '')
+    {
+        $worksheetCount = count($this->workSheetCollection);
+        for ($i = 0; $i < $worksheetCount; ++$i) {
+            if ($this->workSheetCollection[$i]->getCodeName() == $pName) {
+                return $this->workSheetCollection[$i];
+            }
+        }
+
+        return null;
+    }
+
+     /**
+     * Create a new PHPExcel with one Worksheet
+     */
+    public function __construct()
+    {
+        $this->uniqueID = uniqid();
+        $this->calculationEngine = new PHPExcel_Calculation($this);
+
+        // Initialise worksheet collection and add one worksheet
+        $this->workSheetCollection = array();
+        $this->workSheetCollection[] = new PHPExcel_Worksheet($this);
+        $this->activeSheetIndex = 0;
+
+        // Create document properties
+        $this->properties = new PHPExcel_DocumentProperties();
+
+        // Create document security
+        $this->security = new PHPExcel_DocumentSecurity();
+
+        // Set named ranges
+        $this->namedRanges = array();
+
+        // Create the cellXf supervisor
+        $this->cellXfSupervisor = new PHPExcel_Style(true);
+        $this->cellXfSupervisor->bindParent($this);
+
+        // Create the default style
+        $this->addCellXf(new PHPExcel_Style);
+        $this->addCellStyleXf(new PHPExcel_Style);
+    }
+
+    /**
+     * Code to execute when this worksheet is unset()
+     *
+     */
+    public function __destruct()
+    {
+        $this->calculationEngine = null;
+        $this->disconnectWorksheets();
+    }
+
+    /**
+     * Disconnect all worksheets from this PHPExcel workbook object,
+     *    typically so that the PHPExcel object can be unset
+     *
+     */
+    public function disconnectWorksheets()
+    {
+        $worksheet = null;
+        foreach ($this->workSheetCollection as $k => &$worksheet) {
+            $worksheet->disconnectCells();
+            $this->workSheetCollection[$k] = null;
+        }
+        unset($worksheet);
+        $this->workSheetCollection = array();
+    }
+
+    /**
+     * Return the calculation engine for this worksheet
+     *
+     * @return PHPExcel_Calculation
+     */
+    public function getCalculationEngine()
+    {
+        return $this->calculationEngine;
+    }    //    function getCellCacheController()
+
+    /**
+     * Get properties
+     *
+     * @return PHPExcel_DocumentProperties
+     */
+    public function getProperties()
+    {
+        return $this->properties;
+    }
+
+    /**
+     * Set properties
+     *
+     * @param PHPExcel_DocumentProperties    $pValue
+     */
+    public function setProperties(PHPExcel_DocumentProperties $pValue)
+    {
+        $this->properties = $pValue;
+    }
+
+    /**
+     * Get security
+     *
+     * @return PHPExcel_DocumentSecurity
+     */
+    public function getSecurity()
+    {
+        return $this->security;
+    }
+
+    /**
+     * Set security
+     *
+     * @param PHPExcel_DocumentSecurity    $pValue
+     */
+    public function setSecurity(PHPExcel_DocumentSecurity $pValue)
+    {
+        $this->security = $pValue;
+    }
+
+    /**
+     * Get active sheet
+     *
+     * @return PHPExcel_Worksheet
+     *
+     * @throws PHPExcel_Exception
+     */
+    public function getActiveSheet()
+    {
+        return $this->getSheet($this->activeSheetIndex);
+    }
+
+    /**
+     * Create sheet and add it to this workbook
+     *
+     * @param  int|null $iSheetIndex Index where sheet should go (0,1,..., or null for last)
+     * @return PHPExcel_Worksheet
+     * @throws PHPExcel_Exception
+     */
+    public function createSheet($iSheetIndex = null)
+    {
+        $newSheet = new PHPExcel_Worksheet($this);
+        $this->addSheet($newSheet, $iSheetIndex);
+        return $newSheet;
+    }
+
+    /**
+     * Check if a sheet with a specified name already exists
+     *
+     * @param  string $pSheetName  Name of the worksheet to check
+     * @return boolean
+     */
+    public function sheetNameExists($pSheetName)
+    {
+        return ($this->getSheetByName($pSheetName) !== null);
+    }
+
+    /**
+     * Add sheet
+     *
+     * @param  PHPExcel_Worksheet $pSheet
+     * @param  int|null $iSheetIndex Index where sheet should go (0,1,..., or null for last)
+     * @return PHPExcel_Worksheet
+     * @throws PHPExcel_Exception
+     */
+    public function addSheet(PHPExcel_Worksheet $pSheet, $iSheetIndex = null)
+    {
+        if ($this->sheetNameExists($pSheet->getTitle())) {
+            throw new PHPExcel_Exception(
+                "Workbook already contains a worksheet named '{$pSheet->getTitle()}'. Rename this worksheet first."
+            );
+        }
+
+        if ($iSheetIndex === null) {
+            if ($this->activeSheetIndex < 0) {
+                $this->activeSheetIndex = 0;
+            }
+            $this->workSheetCollection[] = $pSheet;
+        } else {
+            // Insert the sheet at the requested index
+            array_splice(
+                $this->workSheetCollection,
+                $iSheetIndex,
+                0,
+                array($pSheet)
+            );
+
+            // Adjust active sheet index if necessary
+            if ($this->activeSheetIndex >= $iSheetIndex) {
+                ++$this->activeSheetIndex;
+            }
+        }
+
+        if ($pSheet->getParent() === null) {
+            $pSheet->rebindParent($this);
+        }
+
+        return $pSheet;
+    }
+
+    /**
+     * Remove sheet by index
+     *
+     * @param  int $pIndex Active sheet index
+     * @throws PHPExcel_Exception
+     */
+    public function removeSheetByIndex($pIndex = 0)
+    {
+
+        $numSheets = count($this->workSheetCollection);
+        if ($pIndex > $numSheets - 1) {
+            throw new PHPExcel_Exception(
+                "You tried to remove a sheet by the out of bounds index: {$pIndex}. The actual number of sheets is {$numSheets}."
+            );
+        } else {
+            array_splice($this->workSheetCollection, $pIndex, 1);
+        }
+        // Adjust active sheet index if necessary
+        if (($this->activeSheetIndex >= $pIndex) &&
+            ($pIndex > count($this->workSheetCollection) - 1)) {
+            --$this->activeSheetIndex;
+        }
+
+    }
+
+    /**
+     * Get sheet by index
+     *
+     * @param  int $pIndex Sheet index
+     * @return PHPExcel_Worksheet
+     * @throws PHPExcel_Exception
+     */
+    public function getSheet($pIndex = 0)
+    {
+        if (!isset($this->workSheetCollection[$pIndex])) {
+            $numSheets = $this->getSheetCount();
+            throw new PHPExcel_Exception(
+                "Your requested sheet index: {$pIndex} is out of bounds. The actual number of sheets is {$numSheets}."
+            );
+        }
+
+        return $this->workSheetCollection[$pIndex];
+    }
+
+    /**
+     * Get all sheets
+     *
+     * @return PHPExcel_Worksheet[]
+     */
+    public function getAllSheets()
+    {
+        return $this->workSheetCollection;
+    }
+
+    /**
+     * Get sheet by name
+     *
+     * @param  string $pName Sheet name
+     * @return PHPExcel_Worksheet
+     */
+    public function getSheetByName($pName = '')
+    {
+        $worksheetCount = count($this->workSheetCollection);
+        for ($i = 0; $i < $worksheetCount; ++$i) {
+            if ($this->workSheetCollection[$i]->getTitle() === $pName) {
+                return $this->workSheetCollection[$i];
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Get index for sheet
+     *
+     * @param  PHPExcel_Worksheet $pSheet
+     * @return int Sheet index
+     * @throws PHPExcel_Exception
+     */
+    public function getIndex(PHPExcel_Worksheet $pSheet)
+    {
+        foreach ($this->workSheetCollection as $key => $value) {
+            if ($value->getHashCode() == $pSheet->getHashCode()) {
+                return $key;
+            }
+        }
+
+        throw new PHPExcel_Exception("Sheet does not exist.");
+    }
+
+    /**
+     * Set index for sheet by sheet name.
+     *
+     * @param  string $sheetName Sheet name to modify index for
+     * @param  int $newIndex New index for the sheet
+     * @return int New sheet index
+     * @throws PHPExcel_Exception
+     */
+    public function setIndexByName($sheetName, $newIndex)
+    {
+        $oldIndex = $this->getIndex($this->getSheetByName($sheetName));
+        $pSheet = array_splice(
+            $this->workSheetCollection,
+            $oldIndex,
+            1
+        );
+        array_splice(
+            $this->workSheetCollection,
+            $newIndex,
+            0,
+            $pSheet
+        );
+        return $newIndex;
+    }
+
+    /**
+     * Get sheet count
+     *
+     * @return int
+     */
+    public function getSheetCount()
+    {
+        return count($this->workSheetCollection);
+    }
+
+    /**
+     * Get active sheet index
+     *
+     * @return int Active sheet index
+     */
+    public function getActiveSheetIndex()
+    {
+        return $this->activeSheetIndex;
+    }
+
+    /**
+     * Set active sheet index
+     *
+     * @param  int $pIndex Active sheet index
+     * @throws PHPExcel_Exception
+     * @return PHPExcel_Worksheet
+     */
+    public function setActiveSheetIndex($pIndex = 0)
+    {
+        $numSheets = count($this->workSheetCollection);
+
+        if ($pIndex > $numSheets - 1) {
+            throw new PHPExcel_Exception(
+                "You tried to set a sheet active by the out of bounds index: {$pIndex}. The actual number of sheets is {$numSheets}."
+            );
+        } else {
+            $this->activeSheetIndex = $pIndex;
+        }
+        return $this->getActiveSheet();
+    }
+
+    /**
+     * Set active sheet index by name
+     *
+     * @param  string $pValue Sheet title
+     * @return PHPExcel_Worksheet
+     * @throws PHPExcel_Exception
+     */
+    public function setActiveSheetIndexByName($pValue = '')
+    {
+        if (($worksheet = $this->getSheetByName($pValue)) instanceof PHPExcel_Worksheet) {
+            $this->setActiveSheetIndex($this->getIndex($worksheet));
+            return $worksheet;
+        }
+
+        throw new PHPExcel_Exception('Workbook does not contain sheet:' . $pValue);
+    }
+
+    /**
+     * Get sheet names
+     *
+     * @return string[]
+     */
+    public function getSheetNames()
+    {
+        $returnValue = array();
+        $worksheetCount = $this->getSheetCount();
+        for ($i = 0; $i < $worksheetCount; ++$i) {
+            $returnValue[] = $this->getSheet($i)->getTitle();
+        }
+
+        return $returnValue;
+    }
+
+    /**
+     * Add external sheet
+     *
+     * @param  PHPExcel_Worksheet $pSheet External sheet to add
+     * @param  int|null $iSheetIndex Index where sheet should go (0,1,..., or null for last)
+     * @throws PHPExcel_Exception
+     * @return PHPExcel_Worksheet
+     */
+    public function addExternalSheet(PHPExcel_Worksheet $pSheet, $iSheetIndex = null)
+    {
+        if ($this->sheetNameExists($pSheet->getTitle())) {
+            throw new PHPExcel_Exception("Workbook already contains a worksheet named '{$pSheet->getTitle()}'. Rename the external sheet first.");
+        }
+
+        // count how many cellXfs there are in this workbook currently, we will need this below
+        $countCellXfs = count($this->cellXfCollection);
+
+        // copy all the shared cellXfs from the external workbook and append them to the current
+        foreach ($pSheet->getParent()->getCellXfCollection() as $cellXf) {
+            $this->addCellXf(clone $cellXf);
+        }
+
+        // move sheet to this workbook
+        $pSheet->rebindParent($this);
+
+        // update the cellXfs
+        foreach ($pSheet->getCellCollection(false) as $cellID) {
+            $cell = $pSheet->getCell($cellID);
+            $cell->setXfIndex($cell->getXfIndex() + $countCellXfs);
+        }
+
+        return $this->addSheet($pSheet, $iSheetIndex);
+    }
+
+    /**
+     * Get named ranges
+     *
+     * @return PHPExcel_NamedRange[]
+     */
+    public function getNamedRanges()
+    {
+        return $this->namedRanges;
+    }
+
+    /**
+     * Add named range
+     *
+     * @param  PHPExcel_NamedRange $namedRange
+     * @return boolean
+     */
+    public function addNamedRange(PHPExcel_NamedRange $namedRange)
+    {
+        if ($namedRange->getScope() == null) {
+            // global scope
+            $this->namedRanges[$namedRange->getName()] = $namedRange;
+        } else {
+            // local scope
+            $this->namedRanges[$namedRange->getScope()->getTitle().'!'.$namedRange->getName()] = $namedRange;
+        }
+        return true;
+    }
+
+    /**
+     * Get named range
+     *
+     * @param  string $namedRange
+     * @param  PHPExcel_Worksheet|null $pSheet Scope. Use null for global scope
+     * @return PHPExcel_NamedRange|null
+     */
+    public function getNamedRange($namedRange, PHPExcel_Worksheet $pSheet = null)
+    {
+        $returnValue = null;
+
+        if ($namedRange != '' && ($namedRange !== null)) {
+            // first look for global defined name
+            if (isset($this->namedRanges[$namedRange])) {
+                $returnValue = $this->namedRanges[$namedRange];
+            }
+
+            // then look for local defined name (has priority over global defined name if both names exist)
+            if (($pSheet !== null) && isset($this->namedRanges[$pSheet->getTitle() . '!' . $namedRange])) {
+                $returnValue = $this->namedRanges[$pSheet->getTitle() . '!' . $namedRange];
+            }
+        }
+
+        return $returnValue;
+    }
+
+    /**
+     * Remove named range
+     *
+     * @param  string  $namedRange
+     * @param  PHPExcel_Worksheet|null  $pSheet  Scope: use null for global scope.
+     * @return PHPExcel
+     */
+    public function removeNamedRange($namedRange, PHPExcel_Worksheet $pSheet = null)
+    {
+        if ($pSheet === null) {
+            if (isset($this->namedRanges[$namedRange])) {
+                unset($this->namedRanges[$namedRange]);
+            }
+        } else {
+            if (isset($this->namedRanges[$pSheet->getTitle() . '!' . $namedRange])) {
+                unset($this->namedRanges[$pSheet->getTitle() . '!' . $namedRange]);
+            }
+        }
+        return $this;
+    }
+
+    /**
+     * Get worksheet iterator
+     *
+     * @return PHPExcel_WorksheetIterator
+     */
+    public function getWorksheetIterator()
+    {
+        return new PHPExcel_WorksheetIterator($this);
+    }
+
+    /**
+     * Copy workbook (!= clone!)
+     *
+     * @return PHPExcel
+     */
+    public function copy()
+    {
+        $copied = clone $this;
+
+        $worksheetCount = count($this->workSheetCollection);
+        for ($i = 0; $i < $worksheetCount; ++$i) {
+            $this->workSheetCollection[$i] = $this->workSheetCollection[$i]->copy();
+            $this->workSheetCollection[$i]->rebindParent($this);
+        }
+
+        return $copied;
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone()
+    {
+        foreach ($this as $key => $val) {
+            if (is_object($val) || (is_array($val))) {
+                $this->{$key} = unserialize(serialize($val));
+            }
+        }
+    }
+
+    /**
+     * Get the workbook collection of cellXfs
+     *
+     * @return PHPExcel_Style[]
+     */
+    public function getCellXfCollection()
+    {
+        return $this->cellXfCollection;
+    }
+
+    /**
+     * Get cellXf by index
+     *
+     * @param  int $pIndex
+     * @return PHPExcel_Style
+     */
+    public function getCellXfByIndex($pIndex = 0)
+    {
+        return $this->cellXfCollection[$pIndex];
+    }
+
+    /**
+     * Get cellXf by hash code
+     *
+     * @param  string $pValue
+     * @return PHPExcel_Style|boolean False if no match found
+     */
+    public function getCellXfByHashCode($pValue = '')
+    {
+        foreach ($this->cellXfCollection as $cellXf) {
+            if ($cellXf->getHashCode() == $pValue) {
+                return $cellXf;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check if style exists in style collection
+     *
+     * @param  PHPExcel_Style $pCellStyle
+     * @return boolean
+     */
+    public function cellXfExists($pCellStyle = null)
+    {
+        return in_array($pCellStyle, $this->cellXfCollection, true);
+    }
+
+    /**
+     * Get default style
+     *
+     * @return PHPExcel_Style
+     * @throws PHPExcel_Exception
+     */
+    public function getDefaultStyle()
+    {
+        if (isset($this->cellXfCollection[0])) {
+            return $this->cellXfCollection[0];
+        }
+        throw new PHPExcel_Exception('No default style found for this workbook');
+    }
+
+    /**
+     * Add a cellXf to the workbook
+     *
+     * @param PHPExcel_Style $style
+     */
+    public function addCellXf(PHPExcel_Style $style)
+    {
+        $this->cellXfCollection[] = $style;
+        $style->setIndex(count($this->cellXfCollection) - 1);
+    }
+
+    /**
+     * Remove cellXf by index. It is ensured that all cells get their xf index updated.
+     *
+     * @param integer $pIndex Index to cellXf
+     * @throws PHPExcel_Exception
+     */
+    public function removeCellXfByIndex($pIndex = 0)
+    {
+        if ($pIndex > count($this->cellXfCollection) - 1) {
+            throw new PHPExcel_Exception("CellXf index is out of bounds.");
+        } else {
+            // first remove the cellXf
+            array_splice($this->cellXfCollection, $pIndex, 1);
+
+            // then update cellXf indexes for cells
+            foreach ($this->workSheetCollection as $worksheet) {
+                foreach ($worksheet->getCellCollection(false) as $cellID) {
+                    $cell = $worksheet->getCell($cellID);
+                    $xfIndex = $cell->getXfIndex();
+                    if ($xfIndex > $pIndex) {
+                        // decrease xf index by 1
+                        $cell->setXfIndex($xfIndex - 1);
+                    } elseif ($xfIndex == $pIndex) {
+                        // set to default xf index 0
+                        $cell->setXfIndex(0);
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Get the cellXf supervisor
+     *
+     * @return PHPExcel_Style
+     */
+    public function getCellXfSupervisor()
+    {
+        return $this->cellXfSupervisor;
+    }
+
+    /**
+     * Get the workbook collection of cellStyleXfs
+     *
+     * @return PHPExcel_Style[]
+     */
+    public function getCellStyleXfCollection()
+    {
+        return $this->cellStyleXfCollection;
+    }
+
+    /**
+     * Get cellStyleXf by index
+     *
+     * @param integer $pIndex Index to cellXf
+     * @return PHPExcel_Style
+     */
+    public function getCellStyleXfByIndex($pIndex = 0)
+    {
+        return $this->cellStyleXfCollection[$pIndex];
+    }
+
+    /**
+     * Get cellStyleXf by hash code
+     *
+     * @param  string $pValue
+     * @return PHPExcel_Style|boolean False if no match found
+     */
+    public function getCellStyleXfByHashCode($pValue = '')
+    {
+        foreach ($this->cellStyleXfCollection as $cellStyleXf) {
+            if ($cellStyleXf->getHashCode() == $pValue) {
+                return $cellStyleXf;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Add a cellStyleXf to the workbook
+     *
+     * @param PHPExcel_Style $pStyle
+     */
+    public function addCellStyleXf(PHPExcel_Style $pStyle)
+    {
+        $this->cellStyleXfCollection[] = $pStyle;
+        $pStyle->setIndex(count($this->cellStyleXfCollection) - 1);
+    }
+
+    /**
+     * Remove cellStyleXf by index
+     *
+     * @param integer $pIndex Index to cellXf
+     * @throws PHPExcel_Exception
+     */
+    public function removeCellStyleXfByIndex($pIndex = 0)
+    {
+        if ($pIndex > count($this->cellStyleXfCollection) - 1) {
+            throw new PHPExcel_Exception("CellStyleXf index is out of bounds.");
+        } else {
+            array_splice($this->cellStyleXfCollection, $pIndex, 1);
+        }
+    }
+
+    /**
+     * Eliminate all unneeded cellXf and afterwards update the xfIndex for all cells
+     * and columns in the workbook
+     */
+    public function garbageCollect()
+    {
+        // how many references are there to each cellXf ?
+        $countReferencesCellXf = array();
+        foreach ($this->cellXfCollection as $index => $cellXf) {
+            $countReferencesCellXf[$index] = 0;
+        }
+
+        foreach ($this->getWorksheetIterator() as $sheet) {
+            // from cells
+            foreach ($sheet->getCellCollection(false) as $cellID) {
+                $cell = $sheet->getCell($cellID);
+                ++$countReferencesCellXf[$cell->getXfIndex()];
+            }
+
+            // from row dimensions
+            foreach ($sheet->getRowDimensions() as $rowDimension) {
+                if ($rowDimension->getXfIndex() !== null) {
+                    ++$countReferencesCellXf[$rowDimension->getXfIndex()];
+                }
+            }
+
+            // from column dimensions
+            foreach ($sheet->getColumnDimensions() as $columnDimension) {
+                ++$countReferencesCellXf[$columnDimension->getXfIndex()];
+            }
+        }
+
+        // remove cellXfs without references and create mapping so we can update xfIndex
+        // for all cells and columns
+        $countNeededCellXfs = 0;
+        $map = array();
+        foreach ($this->cellXfCollection as $index => $cellXf) {
+            if ($countReferencesCellXf[$index] > 0 || $index == 0) { // we must never remove the first cellXf
+                ++$countNeededCellXfs;
+            } else {
+                unset($this->cellXfCollection[$index]);
+            }
+            $map[$index] = $countNeededCellXfs - 1;
+        }
+        $this->cellXfCollection = array_values($this->cellXfCollection);
+
+        // update the index for all cellXfs
+        foreach ($this->cellXfCollection as $i => $cellXf) {
+            $cellXf->setIndex($i);
+        }
+
+        // make sure there is always at least one cellXf (there should be)
+        if (empty($this->cellXfCollection)) {
+            $this->cellXfCollection[] = new PHPExcel_Style();
+        }
+
+        // update the xfIndex for all cells, row dimensions, column dimensions
+        foreach ($this->getWorksheetIterator() as $sheet) {
+            // for all cells
+            foreach ($sheet->getCellCollection(false) as $cellID) {
+                $cell = $sheet->getCell($cellID);
+                $cell->setXfIndex($map[$cell->getXfIndex()]);
+            }
+
+            // for all row dimensions
+            foreach ($sheet->getRowDimensions() as $rowDimension) {
+                if ($rowDimension->getXfIndex() !== null) {
+                    $rowDimension->setXfIndex($map[$rowDimension->getXfIndex()]);
+                }
+            }
+
+            // for all column dimensions
+            foreach ($sheet->getColumnDimensions() as $columnDimension) {
+                $columnDimension->setXfIndex($map[$columnDimension->getXfIndex()]);
+            }
+
+            // also do garbage collection for all the sheets
+            $sheet->garbageCollect();
+        }
+    }
+
+    /**
+     * Return the unique ID value assigned to this spreadsheet workbook
+     *
+     * @return string
+     */
+    public function getID()
+    {
+        return $this->uniqueID;
+    }
+}

+<?php
+
+PHPExcel_Autoloader::register();
+//    As we always try to run the autoloader before anything else, we can use it to do a few
+//        simple checks and initialisations
+//PHPExcel_Shared_ZipStreamWrapper::register();
+// check mbstring.func_overload
+if (ini_get('mbstring.func_overload') & 2) {
+    throw new PHPExcel_Exception('Multibyte function overloading in PHP must be disabled for string functions (2).');
+}
+PHPExcel_Shared_String::buildCharacterSets();
+
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_Autoloader
+{
+    /**
+     * Register the Autoloader with SPL
+     *
+     */
+    public static function register()
+    {
+        if (function_exists('__autoload')) {
+            // Register any existing autoloader function with SPL, so we don't get any clashes
+            spl_autoload_register('__autoload');
+        }
+        // Register ourselves with SPL
+        if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
+            return spl_autoload_register(array('PHPExcel_Autoloader', 'load'), true, true);
+        } else {
+            return spl_autoload_register(array('PHPExcel_Autoloader', 'load'));
+        }
+    }
+
+    /**
+     * Autoload a class identified by name
+     *
+     * @param    string    $pClassName        Name of the object to load
+     */
+    public static function load($pClassName)
+    {
+        if ((class_exists($pClassName, false)) || (strpos($pClassName, 'PHPExcel') !== 0)) {
+            // Either already loaded, or not a PHPExcel class request
+            return false;
+        }
+
+        $pClassFilePath = PHPEXCEL_ROOT .
+            str_replace('_', DIRECTORY_SEPARATOR, $pClassName) .
+            '.php';
+
+        if ((file_exists($pClassFilePath) === false) || (is_readable($pClassFilePath) === false)) {
+            // Can't load
+            return false;
+        }
+
+        require($pClassFilePath);
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_APC
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet
+     *
+     * @access    private
+     * @var string
+     */
+    private $cachePrefix = null;
+
+    /**
+     * Cache timeout
+     *
+     * @access    private
+     * @var integer
+     */
+    private $cacheTime = 600;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @access  private
+     * @return  void
+     * @throws  PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            if (!apc_store(
+                $this->cachePrefix . $this->currentObjectID . '.cache',
+                serialize($this->currentObject),
+                $this->cacheTime
+            )) {
+                $this->__destruct();
+                throw new PHPExcel_Exception('Failed to store cell ' . $this->currentObjectID . ' in APC');
+            }
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @access  public
+     * @param   string         $pCoord  Coordinate address of the cell to update
+     * @param   PHPExcel_Cell  $cell    Cell to update
+     * @return  PHPExcel_Cell
+     * @throws  PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+        $this->cellCache[$pCoord] = true;
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @access  public
+     * @param   string  $pCoord  Coordinate address of the cell to check
+     * @throws  PHPExcel_Exception
+     * @return  boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        //    Check if the requested entry is the current object, or exists in the cache
+        if (parent::isDataSet($pCoord)) {
+            if ($this->currentObjectID == $pCoord) {
+                return true;
+            }
+            //    Check if the requested entry still exists in apc
+            $success = apc_fetch($this->cachePrefix.$pCoord.'.cache');
+            if ($success === false) {
+                //    Entry no longer exists in APC, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in APC cache');
+            }
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @access  public
+     * @param   string         $pCoord  Coordinate of the cell
+     * @throws  PHPExcel_Exception
+     * @return  PHPExcel_Cell  Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (parent::isDataSet($pCoord)) {
+            $obj = apc_fetch($this->cachePrefix . $pCoord . '.cache');
+            if ($obj === false) {
+                //    Entry no longer exists in APC, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in APC cache');
+            }
+        } else {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @access  public
+     * @param   string  $pCoord  Coordinate address of the cell to delete
+     * @throws  PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        //    Delete the entry from APC
+        apc_delete($this->cachePrefix.$pCoord.'.cache');
+
+        //    Delete the entry from our cell address array
+        parent::deleteCacheData($pCoord);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @access  public
+     * @param   PHPExcel_Worksheet  $parent  The new worksheet
+     * @throws  PHPExcel_Exception
+     * @return  void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->getUniqueID();
+        $newCachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            if ($cellID != $this->currentObjectID) {
+                $obj = apc_fetch($this->cachePrefix . $cellID . '.cache');
+                if ($obj === false) {
+                    //    Entry no longer exists in APC, so clear it from the cache array
+                    parent::deleteCacheData($cellID);
+                    throw new PHPExcel_Exception('Cell entry ' . $cellID . ' no longer exists in APC');
+                }
+                if (!apc_store($newCachePrefix . $cellID . '.cache', $obj, $this->cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell ' . $cellID . ' in APC');
+                }
+            }
+        }
+        $this->cachePrefix = $newCachePrefix;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return  void
+     */
+    public function unsetWorksheetCells()
+    {
+        if ($this->currentObject !== null) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+
+        //    Flush the APC cache
+        $this->__destruct();
+
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param  PHPExcel_Worksheet  $parent     The worksheet for this cell collection
+     * @param  array of mixed      $arguments  Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $cacheTime = (isset($arguments['cacheTime'])) ? $arguments['cacheTime'] : 600;
+
+        if ($this->cachePrefix === null) {
+            $baseUnique = $this->getUniqueID();
+            $this->cachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+            $this->cacheTime = $cacheTime;
+
+            parent::__construct($parent);
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            apc_delete($this->cachePrefix . $cellID . '.cache');
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return  boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('apc_store')) {
+            return false;
+        }
+        if (apc_sma_info() === false) {
+            return false;
+        }
+
+        return true;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_CacheBase
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+abstract class PHPExcel_CachedObjectStorage_CacheBase
+{
+    /**
+     * Parent worksheet
+     *
+     * @var PHPExcel_Worksheet
+     */
+    protected $parent;
+
+    /**
+     * The currently active Cell
+     *
+     * @var PHPExcel_Cell
+     */
+    protected $currentObject = null;
+
+    /**
+     * Coordinate address of the currently active Cell
+     *
+     * @var string
+     */
+    protected $currentObjectID = null;
+
+    /**
+     * Flag indicating whether the currently active Cell requires saving
+     *
+     * @var boolean
+     */
+    protected $currentCellIsDirty = true;
+
+    /**
+     * An array of cells or cell pointers for the worksheet cells held in this cache,
+     *        and indexed by their coordinate address within the worksheet
+     *
+     * @var array of mixed
+     */
+    protected $cellCache = array();
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     */
+    public function __construct(PHPExcel_Worksheet $parent)
+    {
+        //    Set our parent worksheet.
+        //    This is maintained within the cache controller to facilitate re-attaching it to PHPExcel_Cell objects when
+        //        they are woken from a serialized state
+        $this->parent = $parent;
+    }
+
+    /**
+     * Return the parent worksheet for this cell collection
+     *
+     * @return    PHPExcel_Worksheet
+     */
+    public function getParent()
+    {
+        return $this->parent;
+    }
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return true;
+        }
+        //    Check if the requested entry exists in the cache
+        return isset($this->cellCache[$pCoord]);
+    }
+
+    /**
+     * Move a cell object from one address to another
+     *
+     * @param    string        $fromAddress    Current address of the cell to move
+     * @param    string        $toAddress        Destination address of the cell to move
+     * @return    boolean
+     */
+    public function moveCell($fromAddress, $toAddress)
+    {
+        if ($fromAddress === $this->currentObjectID) {
+            $this->currentObjectID = $toAddress;
+        }
+        $this->currentCellIsDirty = true;
+        if (isset($this->cellCache[$fromAddress])) {
+            $this->cellCache[$toAddress] = &$this->cellCache[$fromAddress];
+            unset($this->cellCache[$fromAddress]);
+        }
+
+        return true;
+    }
+
+    /**
+     * Add or Update a cell in cache
+     *
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function updateCacheData(PHPExcel_Cell $cell)
+    {
+        return $this->addCacheData($cell->getCoordinate(), $cell);
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID && !is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObjectID = $this->currentObject = null;
+        }
+
+        if (is_object($this->cellCache[$pCoord])) {
+            $this->cellCache[$pCoord]->detach();
+            unset($this->cellCache[$pCoord]);
+        }
+        $this->currentCellIsDirty = false;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList()
+    {
+        return array_keys($this->cellCache);
+    }
+
+    /**
+     * Sort the list of all cell addresses currently held in cache by row and column
+     *
+     * @return    string[]
+     */
+    public function getSortedCellList()
+    {
+        $sortKeys = array();
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $column, $row);
+            $sortKeys[sprintf('%09d%3s', $row, $column)] = $coord;
+        }
+        ksort($sortKeys);
+
+        return array_values($sortKeys);
+    }
+
+    /**
+     * Get highest worksheet column and highest row that have cell records
+     *
+     * @return array Highest column name and highest row number
+     */
+    public function getHighestRowAndColumn()
+    {
+        // Lookup highest column and highest row
+        $col = array('A' => '1A');
+        $row = array(1);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            $row[$r] = $r;
+            $col[$c] = strlen($c).$c;
+        }
+        if (!empty($row)) {
+            // Determine highest column and row
+            $highestRow = max($row);
+            $highestColumn = substr(max($col), 1);
+        }
+
+        return array(
+            'row'    => $highestRow,
+            'column' => $highestColumn
+        );
+    }
+
+    /**
+     * Return the cell address of the currently active cell object
+     *
+     * @return    string
+     */
+    public function getCurrentAddress()
+    {
+        return $this->currentObjectID;
+    }
+
+    /**
+     * Return the column address of the currently active cell object
+     *
+     * @return    string
+     */
+    public function getCurrentColumn()
+    {
+        sscanf($this->currentObjectID, '%[A-Z]%d', $column, $row);
+        return $column;
+    }
+
+    /**
+     * Return the row address of the currently active cell object
+     *
+     * @return    integer
+     */
+    public function getCurrentRow()
+    {
+        sscanf($this->currentObjectID, '%[A-Z]%d', $column, $row);
+        return (integer) $row;
+    }
+
+    /**
+     * Get highest worksheet column
+     *
+     * @param   string     $row        Return the highest column for the specified row,
+     *                                     or the highest column of any row if no row number is passed
+     * @return  string     Highest column name
+     */
+    public function getHighestColumn($row = null)
+    {
+        if ($row == null) {
+            $colRow = $this->getHighestRowAndColumn();
+            return $colRow['column'];
+        }
+
+        $columnList = array(1);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($r != $row) {
+                continue;
+            }
+            $columnList[] = PHPExcel_Cell::columnIndexFromString($c);
+        }
+        return PHPExcel_Cell::stringFromColumnIndex(max($columnList) - 1);
+    }
+
+    /**
+     * Get highest worksheet row
+     *
+     * @param   string     $column     Return the highest row for the specified column,
+     *                                     or the highest row of any column if no column letter is passed
+     * @return  int        Highest row number
+     */
+    public function getHighestRow($column = null)
+    {
+        if ($column == null) {
+            $colRow = $this->getHighestRowAndColumn();
+            return $colRow['row'];
+        }
+
+        $rowList = array(0);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($c != $column) {
+                continue;
+            }
+            $rowList[] = $r;
+        }
+
+        return max($rowList);
+    }
+
+    /**
+     * Generate a unique ID for cache referencing
+     *
+     * @return string Unique Reference
+     */
+    protected function getUniqueID()
+    {
+        if (function_exists('posix_getpid')) {
+            $baseUnique = posix_getpid();
+        } else {
+            $baseUnique = mt_rand();
+        }
+        return uniqid($baseUnique, true);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        $this->currentCellIsDirty;
+        $this->storeData();
+
+        $this->parent = $parent;
+        if (($this->currentObject !== null) && (is_object($this->currentObject))) {
+            $this->currentObject->attach($this);
+        }
+    }    //    function copyCellCollection()
+
+    /**
+     * Remove a row, deleting all cells in that row
+     *
+     * @param string    $row    Row number to remove
+     * @return void
+     */
+    public function removeRow($row)
+    {
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($r == $row) {
+                $this->deleteCacheData($coord);
+            }
+        }
+    }
+
+    /**
+     * Remove a column, deleting all cells in that column
+     *
+     * @param string    $column    Column ID to remove
+     * @return void
+     */
+    public function removeColumn($column)
+    {
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($c == $column) {
+                $this->deleteCacheData($coord);
+            }
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        return true;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_DiscISAM
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Name of the file for this cache
+     *
+     * @var string
+     */
+    private $fileName = null;
+
+    /**
+     * File handle for this cache file
+     *
+     * @var resource
+     */
+    private $fileHandle = null;
+
+    /**
+     * Directory/Folder where the cache file is located
+     *
+     * @var string
+     */
+    private $cacheDirectory = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            fseek($this->fileHandle, 0, SEEK_END);
+
+            $this->cellCache[$this->currentObjectID] = array(
+                'ptr' => ftell($this->fileHandle),
+                'sz'  => fwrite($this->fileHandle, serialize($this->currentObject))
+            );
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        fseek($this->fileHandle, $this->cellCache[$pCoord]['ptr']);
+        $this->currentObject = unserialize(fread($this->fileHandle, $this->cellCache[$pCoord]['sz']));
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->getUniqueID();
+        $newFileName = $this->cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+        //    Copy the existing cell cache file
+        copy($this->fileName, $newFileName);
+        $this->fileName = $newFileName;
+        //    Open the copied cell cache file
+        $this->fileHandle = fopen($this->fileName, 'a+');
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+
+        //    Close down the temporary cache file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $this->cacheDirectory    = ((isset($arguments['dir'])) && ($arguments['dir'] !== null))
+                                    ? $arguments['dir']
+                                    : PHPExcel_Shared_File::sys_get_temp_dir();
+
+        parent::__construct($parent);
+        if (is_null($this->fileHandle)) {
+            $baseUnique = $this->getUniqueID();
+            $this->fileName = $this->cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+            $this->fileHandle = fopen($this->fileName, 'a+');
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->fileHandle)) {
+            fclose($this->fileHandle);
+            unlink($this->fileName);
+        }
+        $this->fileHandle = null;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_ICache
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+interface PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell);
+
+    /**
+     * Add or Update a cell in cache
+     *
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function updateCacheData(PHPExcel_Cell $cell);
+
+    /**
+     * Fetch a cell from cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to retrieve
+     * @return PHPExcel_Cell     Cell that was found, or null if not found
+     * @throws    PHPExcel_Exception
+     */
+    public function getCacheData($pCoord);
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord);
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord);
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList();
+
+    /**
+     * Get the list of all cell addresses currently held in cache sorted by column and row
+     *
+     * @return    string[]
+     */
+    public function getSortedCellList();
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent);
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable();
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Igbinary
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            $this->cellCache[$this->currentObjectID] = igbinary_serialize($this->currentObject);
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }    //    function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }    //    function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = igbinary_unserialize($this->cellCache[$pCoord]);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }    //    function getCacheData()
+
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }    //    function unsetWorksheetCells()
+
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('igbinary_serialize')) {
+            return false;
+        }
+
+        return true;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Memcache
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet
+     *
+     * @var string
+     */
+    private $cachePrefix = null;
+
+    /**
+     * Cache timeout
+     *
+     * @var integer
+     */
+    private $cacheTime = 600;
+
+    /**
+     * Memcache interface
+     *
+     * @var resource
+     */
+    private $memcache = null;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            $obj = serialize($this->currentObject);
+            if (!$this->memcache->replace($this->cachePrefix . $this->currentObjectID . '.cache', $obj, null, $this->cacheTime)) {
+                if (!$this->memcache->add($this->cachePrefix . $this->currentObjectID . '.cache', $obj, null, $this->cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception("Failed to store cell {$this->currentObjectID} in MemCache");
+                }
+            }
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }    //    function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+        $this->cellCache[$pCoord] = true;
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }    //    function addCacheData()
+
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        //    Check if the requested entry is the current object, or exists in the cache
+        if (parent::isDataSet($pCoord)) {
+            if ($this->currentObjectID == $pCoord) {
+                return true;
+            }
+            //    Check if the requested entry still exists in Memcache
+            $success = $this->memcache->get($this->cachePrefix.$pCoord.'.cache');
+            if ($success === false) {
+                //    Entry no longer exists in Memcache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
+            }
+            return true;
+        }
+        return false;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (parent::isDataSet($pCoord)) {
+            $obj = $this->memcache->get($this->cachePrefix . $pCoord . '.cache');
+            if ($obj === false) {
+                //    Entry no longer exists in Memcache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception("Cell entry {$pCoord} no longer exists in MemCache");
+            }
+        } else {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        //    Delete the entry from Memcache
+        $this->memcache->delete($this->cachePrefix . $pCoord . '.cache');
+
+        //    Delete the entry from our cell address array
+        parent::deleteCacheData($pCoord);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->getUniqueID();
+        $newCachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            if ($cellID != $this->currentObjectID) {
+                $obj = $this->memcache->get($this->cachePrefix.$cellID.'.cache');
+                if ($obj === false) {
+                    //    Entry no longer exists in Memcache, so clear it from the cache array
+                    parent::deleteCacheData($cellID);
+                    throw new PHPExcel_Exception("Cell entry {$cellID} no longer exists in MemCache");
+                }
+                if (!$this->memcache->add($newCachePrefix . $cellID . '.cache', $obj, null, $this->cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception("Failed to store cell {$cellID} in MemCache");
+                }
+            }
+        }
+        $this->cachePrefix = $newCachePrefix;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+
+        //    Flush the Memcache cache
+        $this->__destruct();
+
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $memcacheServer = (isset($arguments['memcacheServer'])) ? $arguments['memcacheServer'] : 'localhost';
+        $memcachePort = (isset($arguments['memcachePort'])) ? $arguments['memcachePort'] : 11211;
+        $cacheTime = (isset($arguments['cacheTime'])) ? $arguments['cacheTime'] : 600;
+
+        if (is_null($this->cachePrefix)) {
+            $baseUnique = $this->getUniqueID();
+            $this->cachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+
+            //    Set a new Memcache object and connect to the Memcache server
+            $this->memcache = new Memcache();
+            if (!$this->memcache->addServer($memcacheServer, $memcachePort, false, 50, 5, 5, true, array($this, 'failureCallback'))) {
+                throw new PHPExcel_Exception("Could not connect to MemCache server at {$memcacheServer}:{$memcachePort}");
+            }
+            $this->cacheTime = $cacheTime;
+
+            parent::__construct($parent);
+        }
+    }
+
+    /**
+     * Memcache error handler
+     *
+     * @param    string    $host        Memcache server
+     * @param    integer    $port        Memcache port
+     * @throws    PHPExcel_Exception
+     */
+    public function failureCallback($host, $port)
+    {
+        throw new PHPExcel_Exception("memcache {$host}:{$port} failed");
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            $this->memcache->delete($this->cachePrefix.$cellID . '.cache');
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('memcache_add')) {
+            return false;
+        }
+
+        return true;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Memory
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Dummy method callable from CacheBase, but unused by Memory cache
+     *
+     * @return    void
+     */
+    protected function storeData()
+    {
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        $this->cellCache[$pCoord] = $cell;
+
+        //    Set current entry to the new/updated entry
+        $this->currentObjectID = $pCoord;
+
+        return $cell;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->cellCache[$pCoord])) {
+            $this->currentObjectID = null;
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+
+        //    Return requested entry
+        return $this->cellCache[$pCoord];
+    }
+
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+
+        $newCollection = array();
+        foreach ($this->cellCache as $k => &$cell) {
+            $newCollection[$k] = clone $cell;
+            $newCollection[$k]->attach($this);
+        }
+
+        $this->cellCache = $newCollection;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     */
+    public function unsetWorksheetCells()
+    {
+        // Because cells are all stored as intact objects in memory, we need to detach each one from the parent
+        foreach ($this->cellCache as $k => &$cell) {
+            $cell->detach();
+            $this->cellCache[$k] = null;
+        }
+        unset($cell);
+
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_MemoryGZip
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            $this->cellCache[$this->currentObjectID] = gzdeflate(serialize($this->currentObject));
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = unserialize(gzinflate($this->cellCache[$pCoord]));
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_MemorySerialized
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            $this->cellCache[$this->currentObjectID] = serialize($this->currentObject);
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = unserialize($this->cellCache[$pCoord]);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_PHPTemp
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Name of the file for this cache
+     *
+     * @var string
+     */
+    private $fileHandle = null;
+
+    /**
+     * Memory limit to use before reverting to file cache
+     *
+     * @var integer
+     */
+    private $memoryCacheSize = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            fseek($this->fileHandle, 0, SEEK_END);
+
+            $this->cellCache[$this->currentObjectID] = array(
+                'ptr' => ftell($this->fileHandle),
+                'sz'  => fwrite($this->fileHandle, serialize($this->currentObject))
+            );
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        fseek($this->fileHandle, $this->cellCache[$pCoord]['ptr']);
+        $this->currentObject = unserialize(fread($this->fileHandle, $this->cellCache[$pCoord]['sz']));
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Open a new stream for the cell cache data
+        $newFileHandle = fopen('php://temp/maxmemory:' . $this->memoryCacheSize, 'a+');
+        //    Copy the existing cell cache data to the new stream
+        fseek($this->fileHandle, 0);
+        while (!feof($this->fileHandle)) {
+            fwrite($newFileHandle, fread($this->fileHandle, 1024));
+        }
+        $this->fileHandle = $newFileHandle;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+
+        //    Close down the php://temp file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $this->memoryCacheSize = (isset($arguments['memoryCacheSize'])) ? $arguments['memoryCacheSize'] : '1MB';
+
+        parent::__construct($parent);
+        if (is_null($this->fileHandle)) {
+            $this->fileHandle = fopen('php://temp/maxmemory:' . $this->memoryCacheSize, 'a+');
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->fileHandle)) {
+            fclose($this->fileHandle);
+        }
+        $this->fileHandle = null;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_SQLite
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_SQLite extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Database table name
+     *
+     * @var string
+     */
+    private $TableName = null;
+
+    /**
+     * Database handle
+     *
+     * @var resource
+     */
+    private $DBHandle = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            if (!$this->DBHandle->queryExec("INSERT OR REPLACE INTO kvp_".$this->TableName." VALUES('".$this->currentObjectID."','".sqlite_escape_string(serialize($this->currentObject))."')")) {
+                throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+            }
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        $query = "SELECT value FROM kvp_".$this->TableName." WHERE id='".$pCoord."'";
+        $cellResultSet = $this->DBHandle->query($query, SQLITE_ASSOC);
+        if ($cellResultSet === false) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+        } elseif ($cellResultSet->numRows() == 0) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+
+        $cellResult = $cellResultSet->fetchSingle();
+        $this->currentObject = unserialize($cellResult);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     * Is a value set for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return true;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $query = "SELECT id FROM kvp_".$this->TableName." WHERE id='".$pCoord."'";
+        $cellResultSet = $this->DBHandle->query($query, SQLITE_ASSOC);
+        if ($cellResultSet === false) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+        } elseif ($cellResultSet->numRows() == 0) {
+            //    Return null if requested entry doesn't exist in cache
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            $this->currentObject->detach();
+            $this->currentObjectID = $this->currentObject = null;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $query = "DELETE FROM kvp_".$this->TableName." WHERE id='".$pCoord."'";
+        if (!$this->DBHandle->queryExec($query)) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+        }
+
+        $this->currentCellIsDirty = false;
+    }
+
+    /**
+     * Move a cell object from one address to another
+     *
+     * @param    string        $fromAddress    Current address of the cell to move
+     * @param    string        $toAddress        Destination address of the cell to move
+     * @return    boolean
+     */
+    public function moveCell($fromAddress, $toAddress)
+    {
+        if ($fromAddress === $this->currentObjectID) {
+            $this->currentObjectID = $toAddress;
+        }
+
+        $query = "DELETE FROM kvp_".$this->TableName." WHERE id='".$toAddress."'";
+        $result = $this->DBHandle->exec($query);
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        $query = "UPDATE kvp_".$this->TableName." SET id='".$toAddress."' WHERE id='".$fromAddress."'";
+        $result = $this->DBHandle->exec($query);
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        $query = "SELECT id FROM kvp_".$this->TableName;
+        $cellIdsResult = $this->DBHandle->unbufferedQuery($query, SQLITE_ASSOC);
+        if ($cellIdsResult === false) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+        }
+
+        $cellKeys = array();
+        foreach ($cellIdsResult as $row) {
+            $cellKeys[] = $row['id'];
+        }
+
+        return $cellKeys;
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        $this->currentCellIsDirty;
+        $this->storeData();
+
+        //    Get a new id for the new table name
+        $tableName = str_replace('.', '_', $this->getUniqueID());
+        if (!$this->DBHandle->queryExec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
+            AS SELECT * FROM kvp_'.$this->TableName)
+        ) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+        }
+
+        //    Copy the existing cell cache file
+        $this->TableName = $tableName;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+
+        //    Close down the temporary cache file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     */
+    public function __construct(PHPExcel_Worksheet $parent)
+    {
+        parent::__construct($parent);
+        if (is_null($this->DBHandle)) {
+            $this->TableName = str_replace('.', '_', $this->getUniqueID());
+            $_DBName = ':memory:';
+
+            $this->DBHandle = new SQLiteDatabase($_DBName);
+            if ($this->DBHandle === false) {
+                throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+            }
+            if (!$this->DBHandle->queryExec('CREATE TABLE kvp_'.$this->TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)')) {
+                throw new PHPExcel_Exception(sqlite_error_string($this->DBHandle->lastError()));
+            }
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->DBHandle)) {
+            $this->DBHandle->queryExec('DROP TABLE kvp_'.$this->TableName);
+        }
+        $this->DBHandle = null;
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('sqlite_open')) {
+            return false;
+        }
+
+        return true;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_SQLite3
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_SQLite3 extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Database table name
+     *
+     * @var string
+     */
+    private $TableName = null;
+
+    /**
+     * Database handle
+     *
+     * @var resource
+     */
+    private $DBHandle = null;
+
+    /**
+     * Prepared statement for a SQLite3 select query
+     *
+     * @var SQLite3Stmt
+     */
+    private $selectQuery;
+
+    /**
+     * Prepared statement for a SQLite3 insert query
+     *
+     * @var SQLite3Stmt
+     */
+    private $insertQuery;
+
+    /**
+     * Prepared statement for a SQLite3 update query
+     *
+     * @var SQLite3Stmt
+     */
+    private $updateQuery;
+
+    /**
+     * Prepared statement for a SQLite3 delete query
+     *
+     * @var SQLite3Stmt
+     */
+    private $deleteQuery;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            $this->insertQuery->bindValue('id', $this->currentObjectID, SQLITE3_TEXT);
+            $this->insertQuery->bindValue('data', serialize($this->currentObject), SQLITE3_BLOB);
+            $result = $this->insertQuery->execute();
+            if ($result === false) {
+                throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+            }
+            $this->currentCellIsDirty = false;
+        }
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        $this->selectQuery->bindValue('id', $pCoord, SQLITE3_TEXT);
+        $cellResult = $this->selectQuery->execute();
+        if ($cellResult === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+        $cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
+        if ($cellData === false) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+
+        $this->currentObject = unserialize($cellData['value']);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+    /**
+     *    Is a value set for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return true;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $this->selectQuery->bindValue('id', $pCoord, SQLITE3_TEXT);
+        $cellResult = $this->selectQuery->execute();
+        if ($cellResult === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+        $cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
+
+        return ($cellData === false) ? false : true;
+    }
+
+    /**
+     *    Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            $this->currentObject->detach();
+            $this->currentObjectID = $this->currentObject = null;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $this->deleteQuery->bindValue('id', $pCoord, SQLITE3_TEXT);
+        $result = $this->deleteQuery->execute();
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        $this->currentCellIsDirty = false;
+    }
+
+    /**
+     * Move a cell object from one address to another
+     *
+     * @param    string        $fromAddress    Current address of the cell to move
+     * @param    string        $toAddress        Destination address of the cell to move
+     * @return    boolean
+     */
+    public function moveCell($fromAddress, $toAddress)
+    {
+        if ($fromAddress === $this->currentObjectID) {
+            $this->currentObjectID = $toAddress;
+        }
+
+        $this->deleteQuery->bindValue('id', $toAddress, SQLITE3_TEXT);
+        $result = $this->deleteQuery->execute();
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        $this->updateQuery->bindValue('toid', $toAddress, SQLITE3_TEXT);
+        $this->updateQuery->bindValue('fromid', $fromAddress, SQLITE3_TEXT);
+        $result = $this->updateQuery->execute();
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        $query = "SELECT id FROM kvp_".$this->TableName;
+        $cellIdsResult = $this->DBHandle->query($query);
+        if ($cellIdsResult === false) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        $cellKeys = array();
+        while ($row = $cellIdsResult->fetchArray(SQLITE3_ASSOC)) {
+            $cellKeys[] = $row['id'];
+        }
+
+        return $cellKeys;
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        $this->currentCellIsDirty;
+        $this->storeData();
+
+        //    Get a new id for the new table name
+        $tableName = str_replace('.', '_', $this->getUniqueID());
+        if (!$this->DBHandle->exec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
+            AS SELECT * FROM kvp_'.$this->TableName)
+        ) {
+            throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+        }
+
+        //    Copy the existing cell cache file
+        $this->TableName = $tableName;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+
+        //    Close down the temporary cache file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     */
+    public function __construct(PHPExcel_Worksheet $parent)
+    {
+        parent::__construct($parent);
+        if (is_null($this->DBHandle)) {
+            $this->TableName = str_replace('.', '_', $this->getUniqueID());
+            $_DBName = ':memory:';
+
+            $this->DBHandle = new SQLite3($_DBName);
+            if ($this->DBHandle === false) {
+                throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+            }
+            if (!$this->DBHandle->exec('CREATE TABLE kvp_'.$this->TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)')) {
+                throw new PHPExcel_Exception($this->DBHandle->lastErrorMsg());
+            }
+        }
+
+        $this->selectQuery = $this->DBHandle->prepare("SELECT value FROM kvp_".$this->TableName." WHERE id = :id");
+        $this->insertQuery = $this->DBHandle->prepare("INSERT OR REPLACE INTO kvp_".$this->TableName." VALUES(:id,:data)");
+        $this->updateQuery = $this->DBHandle->prepare("UPDATE kvp_".$this->TableName." SET id=:toId WHERE id=:fromId");
+        $this->deleteQuery = $this->DBHandle->prepare("DELETE FROM kvp_".$this->TableName." WHERE id = :id");
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->DBHandle)) {
+            $this->DBHandle->exec('DROP TABLE kvp_'.$this->TableName);
+            $this->DBHandle->close();
+        }
+        $this->DBHandle = null;
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!class_exists('SQLite3', false)) {
+            return false;
+        }
+
+        return true;
+    }
+}

+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Wincache
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet
+     *
+     * @var string
+     */
+    private $cachePrefix = null;
+
+    /**
+     * Cache timeout
+     *
+     * @var integer
+     */
+    private $cacheTime = 600;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function storeData()
+    {
+        if ($this->currentCellIsDirty && !empty($this->currentObjectID)) {
+            $this->currentObject->detach();
+
+            $obj = serialize($this->currentObject);
+            if (wincache_ucache_exists($this->cachePrefix.$this->currentObjectID.'.cache')) {
+                if (!wincache_ucache_set($this->cachePrefix.$this->currentObjectID.'.cache', $obj, $this->cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$this->currentObjectID.' in WinCache');
+                }
+            } else {
+                if (!wincache_ucache_add($this->cachePrefix.$this->currentObjectID.'.cache', $obj, $this->cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$this->currentObjectID.' in WinCache');
+                }
+            }
+            $this->currentCellIsDirty = false;
+        }
+
+        $this->currentObjectID = $this->currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->currentObjectID) && ($this->currentObjectID !== null)) {
+            $this->storeData();
+        }
+        $this->cellCache[$pCoord] = true;
+
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = $cell;
+        $this->currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        //    Check if the requested entry is the current object, or exists in the cache
+        if (parent::isDataSet($pCoord)) {
+            if ($this->currentObjectID == $pCoord) {
+                return true;
+            }
+            //    Check if the requested entry still exists in cache
+            $success = wincache_ucache_exists($this->cachePrefix.$pCoord.'.cache');
+            if ($success === false) {
+                //    Entry no longer exists in Wincache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
+            }
+            return true;
+        }
+        return false;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param    string            $pCoord        Coordinate of the cell
+     * @throws    PHPExcel_Exception
+     * @return    PHPExcel_Cell    Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->currentObjectID) {
+            return $this->currentObject;
+        }
+        $this->storeData();
+
+        //    Check if the entry that has been requested actually exists
+        $obj = null;
+        if (parent::isDataSet($pCoord)) {
+            $success = false;
+            $obj = wincache_ucache_get($this->cachePrefix.$pCoord.'.cache', $success);
+            if ($success === false) {
+                //    Entry no longer exists in WinCache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
+            }
+        } else {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->currentObjectID = $pCoord;
+        $this->currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->currentObject;
+    }
+
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->currentObjectID !== null) {
+            $this->storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        //    Delete the entry from Wincache
+        wincache_ucache_delete($this->cachePrefix.$pCoord.'.cache');
+
+        //    Delete the entry from our cell address array
+        parent::deleteCacheData($pCoord);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->getUniqueID();
+        $newCachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            if ($cellID != $this->currentObjectID) {
+                $success = false;
+                $obj = wincache_ucache_get($this->cachePrefix.$cellID.'.cache', $success);
+                if ($success === false) {
+                    //    Entry no longer exists in WinCache, so clear it from the cache array
+                    parent::deleteCacheData($cellID);
+                    throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in Wincache');
+                }
+                if (!wincache_ucache_add($newCachePrefix.$cellID.'.cache', $obj, $this->cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in Wincache');
+                }
+            }
+        }
+        $this->cachePrefix = $newCachePrefix;
+    }
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->currentObject)) {
+            $this->currentObject->detach();
+            $this->currentObject = $this->currentObjectID = null;
+        }
+
+        //    Flush the WinCache cache
+        $this->__destruct();
+
+        $this->cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->parent = null;
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $cacheTime    = (isset($arguments['cacheTime']))    ? $arguments['cacheTime']    : 600;
+
+        if (is_null($this->cachePrefix)) {
+            $baseUnique = $this->getUniqueID();
+            $this->cachePrefix = substr(md5($baseUnique), 0, 8).'.';
+            $this->cacheTime = $cacheTime;
+
+            parent::__construct($parent);
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            wincache_ucache_delete($this->cachePrefix.$cellID.'.cache');
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('wincache_ucache_add')) {
+            return false;
+        }
+
+        return true;
+    }
+}