(PHP 4 >= 4.3.0, PHP 5)
msg_send — Send a message to a message queue
$serialize= true [, bool
$blocking= true [, int
msg_send() sends a
message of type
msgtype (which MUST be greater than 0) to the message queue specified by
serialize controls how the
message is sent.
serialize defaults to
TRUE which means that the
message is serialized using the same mechanism as the session module before being sent to the queue. This allows complex arrays and objects to be sent to other PHP scripts, or if you are using the WDDX serializer, to any WDDX compatible client.
If the message is too large to fit in the queue, your script will wait until another process reads messages from the queue and frees enough space for your message to be sent. This is called blocking; you can prevent blocking by setting the optional
blocking parameter to
FALSE, in which case msg_send() will immediately return
FALSE if the message is too big for the queue, and set the optional
MSG_EAGAIN, indicating that you should try to send your message again a little later on.
TRUE on success or
FALSE on failure.
Upon successful completion the message queue data structure is updated as follows:
msg_lspid is set to the process-ID of the calling process,
msg_qnum is incremented by 1 and
msg_stime is set to the current time.