php man page for msg_queue_exists

MSG_QUEUE_EXISTS(3)							 1						       MSG_QUEUE_EXISTS(3)

msg_queue_exists - Check whether a message queue exists

SYNOPSIS
       bool msg_queue_exists (int  $key)

DESCRIPTION
	Checks whether the message queue $key exists.

PARAMETERS
	      o $key
		- Queue key.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

SEE ALSO
       msg_remove_queue(3), msg_receive(3), msg_stat_queue(3).

PHP Documentation Group 												       MSG_QUEUE_EXISTS(3)