避免PHP执行时间限制 [英] Avoid PHP execution time limit

问题描述

我需要用PHP语言创建一个执行数字置换的脚本.但是PHP的执行时间限制为60秒.我该如何运行脚本，以便如果您需要运行60个以上的sesunde，而不会被服务器中断.我知道我可以在php中更改最大执行时间限制，但是我想听听另一个不需要事先知道脚本执行时间的版本.

I need to create a script in PHP language which performs permutation of numbers. But PHP has an execution time limit set to 60 seconds. How can I run the script so that if you need to run more than 60 sesunde, not been interrupted by the server. I know I can change the maximum execution time limit in php, but I want to hear another version that does not require to know in advance the execution time of a script.

一个朋友建议我经常登录并从服务器注销，但是我不知道该怎么做.

A friend suggested me to sign in and log out frequently from the server, but I have no idea how to do this.

欢迎任何建议.示例代码将很有用.

Any advice is welcome. An example code would be useful.

谢谢.

首先，我需要输入一个数字，比方说25.启动脚本后，它需要执行以下操作:对于每个< =大于25的数字，它将创建一个文件，其文件编号为目前阶段；对于下一个数字，它将打开之前创建的文件，并在打开的文件的行上创建另一个文件，依此类推.因为这要花很长时间，所以我需要避免脚本被服务器干扰.

推荐答案

@emanuel:

我猜想，当您的朋友告诉您一个朋友建议我经常从服务器登录并注销，但我不知道如何执行此操作."时，他/她一定是说将您的脚本计算拆分为x件作品并分别运行"

I guess when your friend told you "A friend suggested me to sign in and log out frequently from the server, but I have no idea how to do this.", he/she must have meant "Split your script computation into x pieces of work and run it separately"

例如，使用此脚本，您可以执行150次以达到150！ (分解)并显示结果:

For example with this script you can execute it 150 times to achieve a 150! (factorising) and show the result:

//脚本名称:calc.php

// script name: calc.php

<?php

 session_start();

 if(!isset($_SESSION['times'])){

    $_SESSION['times'] = 1;

    $_SESSION['result']  = 0;

 }elseif($_SESSION['times'] < 150){

    $_SESSION['times']++;

    $_SESSION['result'] = $_SESSION['result'] * $_SESSION['times'];

    header('Location: calc.php');

 }elseif($_SESSION['times'] == 150){

    echo "The Result is: " . $_SESSION['result'];

    die();

 }

?>

顺便说一句(@Davmuz)，您只能在Apache服务器上使用set_time_limit()函数，而在Microsoft IIS服务器上则无效.

BTW (@Davmuz), you can only use set_time_limit() function on Apache servers, it's not a valid function on Microsoft IIS servers.

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