本文实例讲述了PHP的消息通信机制。分享给大家供大家参考，具体如下：

<?php error_reporting(E_ALL&~E_WARNING&~E_NOTICE); /** * Example for sending and receiving Messages via the System V Message Queue * * To try this script run it synchron/asynchron twice times. One time with ?type=send and one time with ?type=receive * * @author Thomas Eimers - Mehrkanal GmbH * * This document is distributed in the hope that it will be useful, but without any warranty; * without even the implied warranty of merchantability or fitness for a particular purpose. */ ob_implicit_flush(1); header('Content-Type: text/plain; charset=ISO-8859-1'); echo "Start...n"; // Create System V Message Queue. Integer value is the number of the Queue //$queue = msg_get_queue(100379); $mesg_key = ftok(__FILE__, 'm'); $mesg_id = msg_get_queue($mesg_key, 0666); $queue = $mesg_id; // Sendoptions $serialize_needed=false; // Must the transfer data be serialized ? $block_send=false; // Block if Message could not be send (Queue full...) (true/false) $msgtype_send=1; // Any Integer above 0. It signeds every Message. So you could handle multible message // type in one Queue. // Receiveoptions $msgtype_receive=1; // Whiche type of Message we want to receive ? (Here, the type is the same as the type we send, // but if you set this to 0 you receive the next Message in the Queue with any type. $maxsize=100; // How long is the maximal data you like to receive. $option_receive=MSG_IPC_NOWAIT; // If there are no messages of the wanted type in the Queue continue without wating. // If is set to NULL wait for a Message. // Send or receive 20 Messages for ($i=0;$i<20;$i++) { sleep(1); ob_flush(); flush(); $message='Hello, This is Flandy,now is '.date("H:i:s",time()); // Transfering Data // This one sends if (isset($_GET['type'])&&$_GET['type']=='send') { if(msg_send($queue,$msgtype_send, $message,$serialize_needed, $block_send,$err)===true) { echo "The ".$i." Message has been sent, the messge is ".$message."n"; } else { var_dump($err); } // This one received } else { $queue_status=msg_stat_queue($queue); echo 'Get Messages in the queue: '.$queue_status['msg_qnum']."n"; print_r($queue_status); echo "n"; if ($queue_status['msg_qnum']>0) { if (msg_receive($queue,$msgtype_receive ,$msgtype_erhalten,$maxsize,$daten,$serialize_needed, $option_receive, $err)===true) { echo "Received data:".$daten."n"; } else { var_dump($err); } } } } ?>

希望本文所述对大家PHP程序设计有所帮助。