Semaphore Functions
PHP Manual

msg_queue_exists

(PHP 5 >= 5.3.0, PHP 7)

msg_queue_existsCheck whether a message queue exists

Description

bool msg_queue_exists ( int $key )

Checks whether the message queue key exists.

Parameters

key

Queue key.

Return Values

Returns TRUE on success or FALSE on failure.

See Also


Semaphore Functions
PHP Manual