订单excel导出（暂存）

app/Http/Function.php

@@ -14,6 +14,14 @@
         $objPHPExcel = new PHPExcel(); 
         include_once(__DIR__."/../../vendor/PHPExcel/PHPExcel/IOFactory.php");
 
+        set_time_limit(0);//不对php(主要是写数据)执行时间做限制
+        ini_set("memory_limit", "1024M");//设置内存(防爆内存)
+        $cacheMethod = \PHPExcel_CachedObjectStorageFactory::cache_in_memory_serialized;//设置缓存策略(减少内存占用)
+        //判断缓存策略是否可用
+        if (!\PHPExcel_Settings::setCacheStorageMethod($cacheMethod)) {
+            die($cacheMethod . " 缓存方法不可用" . EOL);
+        }
+
         $cellName = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','AA','AB','AC','AD','AE','AF','AG','AH','AI','AJ','AK','AL','AM','AN','AO','AP','AQ','AR','AS','AT','AU','AV','AW','AX','AY','AZ');
         //显示导出名称和导出时间
         // $objPHPExcel->getActiveSheet(0)->mergeCells('A1:'.$cellName[$cellNum-1].'1');//合并单元格