php man page for posix_setpgid

POSIX_SETPGID(3)							 1							  POSIX_SETPGID(3)

posix_setpgid - Set process group id for job control

SYNOPSIS
       bool posix_setpgid (int	$pid, int  $pgid)

DESCRIPTION
	Let the process $pid join the process group $pgid.

PARAMETERS
	      o $pid
		- The process id.

	      o $pgid
		- The process group id.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

SEE ALSO
	See POSIX.1 and the setsid(2) manual page on the POSIX system for more informations on process groups and job control. .

PHP Documentation Group 													  POSIX_SETPGID(3)