PHP脚本执行超时的解决办法

ini_set('max_execution_time', '0');

max_execution_time=500

php_value max_execution_time 500

ini_set('max_execution_time', 500);

set_time_limit(0);

<?php
$stid = isset($_GET['stid'])?$_GET['stid']:0;
$endid = $stid + 100;
$maxid = 10000;

function dosomething(){
//要时间比较多的操作
……
}
$sql_string=”select *  from `table`  where id>’$stid’ and id<=’$endid’ order by id”;
$datas = getdata_bysql($sql_string);
foreach($datas as $data){
//处理数据
…..
echo $id.” 处理完成. <br />”;
if($id>=$maxid){exit;}
}
if($stid<=$maxid){
$stid = $stid + 100;
$url=”action.php?stid=$stid”;
echo $url;
echo ‘<script language=”javascript”>location=”‘.$url.’”; </script>’;
}
?>