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PHP将进程作为守护进程的方法

Jun 13, 2016 am 09:11 AM
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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:

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$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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