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PHP将进程作为守护进程的方法,php进程守护进程

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Release: 2016-06-13 09:11:00
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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:

<&#63;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);
    }
  }
&#63;>
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希望本文所述对大家的php程序设计有所帮助。

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