msg_set_queue() allows you to
change the values of the msg_perm.uid, msg_perm.gid,
msg_perm.mode and msg_qbytes fields of the underlying message
queue data structure. You specify the values you require by
setting the value of the keys that you require in the data array.
Changing the data structure will require that PHP be
running as the same user that created the the queue, owns the
queue (as determined by the existing msg_perm.xxx fields), or
be running with root privileges. root privileges are required
to raise the msg_qbytes values above the system defined
limit.
See also: msg_remove_queue(),
msg_receive(),
msg_stat_queue() and
msg_set_queue().
This function was introduced in PHP 4.3.0 (not yet
released).