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
运行环境为Ubuntu14.04
php脚本
<code><?php set_time_limit(0); exec("cat /var/www/result.R|R --vanilla",$text); ?> </code>
无论用Apache还是nginx都会在R语言运行一半时终止运行(在需要等待运行3~5秒时的步骤停止)
但用php在命令行模式
php -f result.php
却能完整运行。
请问是否能通过修改php配置,解决这个问题
回复内容:
运行环境为Ubuntu14.04
php脚本
<code><?php set_time_limit(0); exec("cat /var/www/result.R|R --vanilla",$text); ?> </code>
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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