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数据库操作延时有关问题

WBOY
Release: 2016-06-13 13:32:22
Original
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数据库操作延时问题

PHP code
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        echo "<script language="JavaScript">alert('数据检测已完成!');</script>";
        echo "<script language="JavaScript">location.href='pmf_rkno_query.php'</script>";
        sleep(10);
        mysql_query("delete from `".$p."` where rkno = '".$rkno."'");    

Copy after login


我的想法是返回对应页面后再进行数据库删除操作。现在代码的效果是等待10秒,删除数据,但是还是停留在当前页。请问哪里出了问题?

------解决方案--------------------
可能是服务器缓存了输出
flush(); // 清除缓存
sleep(10);
------解决方案--------------------
flush(); // 推出缓存
这是必要的,对于ie兼容浏览器还需发送累计256字节以上内容才会被执行,除非程序结束

不过你的这个写法存在风险
一旦
被执行,就相当于用户终止了当前程序的连接,而php默认会终止当前程序的执行,你的
 mysql_query("delete from `".$p."` where rkno = '".$rkno."'"); 
也就没有机会执行了
------解决方案--------------------
加上这些呢???另外不同浏览器是有差异的,,chrome就不一定行得通
ini_set('output_buffering','on');
ini_set('zlib.output_compression', 0);

echo "";
echo str_pad(" ", 1024);
ob_flush();
flush();
sleep(10);
mysql_query("delete from `".$p."` where rkno = '".$rkno."'"); 
……
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