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Homephp教程php手册php set_time_limit()设置页面执行时间

set_time_limit函数可以临时定义你当前页面的执行时间,set_time_limit(0)时页面就永远有效直到程序执行完毕了,下面我来介绍set_time_limit用法.

语法 : void set_time_limit (int seconds)

注意 : 当PHP是执行在安全模式时,set_time_limit( )将不会有结果,除非是关闭安全模式或是修改结构档案中(在PHP3中叫做php3.ini,在PHP4则叫做php.ini)的时间限制.

实例代码如下:

<?php
set_time_limit(1000) 
?>

当此函数被调用时, set_time_limit()会从零开始重新启动超时计数器.换句话说,如果超时默认是30秒,在脚本运行了了25秒时调用 set_time_limit(20),那么,脚本在超时之前可运行总时间为45秒.

实例代码如下:

<?php 
require_once(&#39;db.php&#39;); 
$stmt = $db->query($sql); 
while ($row = $stmt->fetchRow()) { 
    set_time_limit(0); 
    // your code here 
} 
?>

相关文章:

php页面最大执行时间 set_time_limit函数不起作用

php set_time_limit(0) 设置程序执行时间的函数

set_time_limit — 设置脚本最大执行时间

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