文字
posix_setsid
(PHP 4, PHP 5)
posix_setsid — Make the current process a session leader
说明
int posix_setsid
( void
)
Make the current process a session leader.
返回值
Returns the session id, or -1 on errors.
参见
- The POSIX.1 and the setsid(2) manual page on the POSIX system for more information on process groups and job control.
用户评论:
[#1] karlsson dot nicklas at gmail dot com [2008-01-22 20:32:02]
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);
}
}
?>