PHP将进程作为守护进程的方法
这篇文章主要介绍了PHP将进程作为守护进程的方法,实例分析了php中守护进程的实现技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了PHP将进程作为守护进程的方法。分享给大家供大家参考。具体分析如下:
php中posix_setsid()的用法
文档解释是“Make the current process a session leader”
参考文档:http://linux.die.net/man/2/setsid
意思就是在一个进程组之间(父进程和子进程)调用这个函数的进程会被选举为进程组的leader
所以让一个进程成为守护进程的方法就是:
1 fork出一个子进程
2 在子进程posix_setsid()
3 退出父进程
文档中有这么个例子:
?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
$pid = pcntl_fork(); // fork if ($pid exit; else if ($pid) // parent exit; else { // child $sid = posix_setsid(); if ($sid exit; for($i = 0; $i sleep(5); } } ?> |
希望本文所述对大家的php程序设计有所帮助。

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