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msg_get_queue
Create or attach to a message queue
(PHP 4 >= 4.3.0, PHP 5)
resource msg_get_queue ( int key [, int perms] )
msg_get_queue() returns an id that can be used to access the System V message queue with the given key. The first call creates the message queue with the optional perms. A second call to msg_get_queue() for the same key will return a different message queue identifier, but both identifiers access the same underlying message queue.