后台管理系统总是成百万的数据导出,使用excel导出根本不能实现,excel只支持65536,2007和2010的是1048576,所以无论哪一种都不能满足需求,csv就符合需求,不限制记录的条数,但是大量数据如果一次性处理导出,会直接导致内存溢出,脚本停止工作,所有采用分割方式导出是比较有好处的。
<?php error_reporting(0); header ( "Content-type:application/vnd.ms-excel" ); header ( "Content-Disposition:filename=" . iconv ( "UTF-8", "GBK", "topic" ) . ".csv" ); //连接数据库 $link = mysql_connect('localhost','root','root') or die('连接错误'); //选择数据库 mysql_select_db("bbs",$link); //设置字符集 mysql_query("set names utf8"); //查询函数 function get_res($sql,$link){ $res = mysql_query($sql,$link); if(!$res){ die("操作失败".mysql_error()); } $arr=array(); while ($row = mysql_fetch_assoc($res)) { $arr[]=$row; } return $arr; } //查询记录总数 function getTotalCount(){ $result = mysql_query("SELECT count(*) as count FROM medsci_edu_public_medsciedu_topic", $link); return $result['count']; } // 打开PHP文件句柄,php://output 表示直接输出到浏览器 $fp = fopen('php://output', 'a'); //表头 $column_name = array('topic_id','cat_id','user_id','is_best','is_top','topic_title','topic_content','topic_img','hits','total_reply_count','created_time','last_updated_time','topic_status','last_reply_name'); // 将中文标题转换编码,否则乱码 foreach ($column_name as $i => $v) { $column_name[$i] = iconv('utf-8', 'gbk', $v); } // 将标题名称通过fputcsv写到文件句柄 fputcsv($fp, $column_name); $pagecount = 10000;//一次读取多少条 $totalcount = getTotalCount();//总记录数 $sql = "select * from medsci_edu_public_medsciedu_topic"; for ($i=0;$i<intval get_res limit foreach as array iconv fputcsv unset ob_flush flush exit>结果测试: <br> <br> <p></p> <p class="sycode"> </p> <p>版权声明:本文为博主原创文章,未经博主允许不得转载。</p> </intval>

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