(PHP 4, PHP 5, PHP 7, PHP 8)
posix_getpgid — Get process group id for job control
Returns the process group identifier of the process
process_id 或者在失败时返回 false.
process_idThe process id.
Returns the identifier, as an int.
示例 #1 Example use of posix_getpgid()
<?php
$pid = posix_getppid();
echo posix_getpgid($pid); //35
?>注意:
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().