Description
bool 
msg_set_queue ( resource queue, array data )
     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 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_get_queue().