posix_setsid

(PHP 4, PHP 5)

posix_setsidMake the current process a session leader

Descrierea

int posix_setsid ( void )

Make the current process a session leader.

Valorile întoarse

Returns the session id, or -1 on errors.

Vedeți de asemenea

  • The POSIX.1 and the setsid(2) manual page on the POSIX system for more information on process groups and job control.

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karlsson dot nicklas at gmail dot com
6 years ago
Very useful when making daemons, for example:

<?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);
        }
    }
?>
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