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Home Backend Development PHP Tutorial php超时 - php-cgi调用外部程序超时,但php在命令行模式下能完整运行外部程序

php超时 - php-cgi调用外部程序超时,但php在命令行模式下能完整运行外部程序

Jun 06, 2016 pm 08:39 PM
php

运行环境为Ubuntu14.04
php脚本

<code><?php set_time_limit(0);
exec("cat /var/www/result.R|R --vanilla",$text); 
?>
</code>
Copy after login
Copy after login

无论用Apache还是nginx都会在R语言运行一半时终止运行(在需要等待运行3~5秒时的步骤停止)

但用php在命令行模式
php -f result.php
却能完整运行。

请问是否能通过修改php配置,解决这个问题

回复内容:

运行环境为Ubuntu14.04
php脚本

<code><?php set_time_limit(0);
exec("cat /var/www/result.R|R --vanilla",$text); 
?>
</code>
Copy after login
Copy after login

无论用Apache还是nginx都会在R语言运行一半时终止运行(在需要等待运行3~5秒时的步骤停止)

但用php在命令行模式
php -f result.php
却能完整运行。

请问是否能通过修改php配置,解决这个问题

这篇文章写的挺详细的(英文):https://rtcamp.com/tutorials/php/increase-script-execution-time/

归纳一下:

  • php.ini:max_execution_time 应该足够长
  • php-fpm.ini:request_terminate_timeout 应该足够长
  • nginx:fastcgi_read_timeout 应该足够长

首先php-cli对脚本运行时间是不做限制的。可以参考http://www.php100.com/manual/php/features.commandline.html。一个常规的Web请求都希望在很短时间内得到响应,所以正常的php-cgi脚本执行是受到配置文件的最长执行时间限制的,apache还好一些,Nginx通过proxy来转发请求,它在这里也会设置一个最长等待时间,超时了就返回5**类似的错误了。如果你的任务都需要很长时间来执行,建议不要使用HTTP来访问PHP了,可以转为后台执行

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