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);
}
}
}
}
?>
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希望本文所述对大家PHP程序设计有所帮助。
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