   #PHP Manual Semaphore, Shared Memory and IPC Functions msg_set_queue
   sem_acquire

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                                msg_stat_queue

   (PHP 4 >= 4.3.0)
   msg_stat_queue --  Returns information from the message queue data
   structure

Description

   array msg_stat_queue ( int queue)

   msg_stat_queue() returns the message queue meta data for the message
   queue specified by the queue. This is useful, for example, to
   determine which process sent the message that was just received.

   The return value is an array whose keys and values have the following
   meanings:

   Table 1. Array structure for msg_stat_queue
   msg_perm.uid The uid of the owner of the queue.
   msg_perm.gid The gid of the owner of the queue.
   msg_perm.mode The file access mode of the queue.
   msg_stime The time that the last message was sent to the queue.
   msg_rtime The time that the last message was received from the queue.
   msg_ctime The time that the queue was last changed.
   msg_qnum The number of messages waiting to be read from the queue.
   msg_qbytes The number of bytes of space currently available in the
   queue to hold sent messages until they are received.
   msg_lspid The pid of the process that sent the last message to the
   queue.
   msg_lrpid The pid of the process that received the last message from
   the queue.

   See also: msg_remove_queue(), msg_receive(), msg_stat_queue() and
   msg_set_queue().
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