(PHP 4, PHP 5, PHP 7)
posix_getpgid — Get process group id for job control
$pid
) : int|false
Returns the process group identifier of the process
pid 或者在失败时返回 FALSE.
pidThe process id.
Returns the identifier, as an int.
Example #1 Example use of posix_getpgid()
<?php
$pid = posix_getppid();
echo posix_getpgid($pid); //35
?>
Note:
This is a not POSIX function, but is common on BSD and System V systems. If the system does not support this function, then it will not be included at compile time. This may be checked with function_exists().