PHP将进程作为守护进程的方法,php进程守护进程
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:
<?php $pid = pcntl_fork(); // fork if ($pid < 0) exit; else if ($pid) // parent exit; else { // child $sid = posix_setsid(); if ($sid < 0) exit; for($i = 0; $i <= 60; $i++) {//do something for 5 minutes 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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