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
Changing the data structure will require that PHP be running as the same user that created 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.