(PECL stomp >= 0.1.0)
Stomp::ack -- stomp_ack — Acknowledges consumption of a message
面向?qū)ο箫L(fēng)格 (method):
過(guò)程化風(fēng)格:
Acknowledges consumption of a message from a subscription using client acknowledgment.
link僅對(duì)過(guò)程化樣式：由 stomp_connect() 返回的 stomp 連接標(biāo)識(shí)符。
msgThe message/messageId to be acknowledged.
headers關(guān)聯(lián)數(shù)組包含附加的頭信息（例如： receipt）。
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。
示例 #1 面向?qū)ο箫L(fēng)格
<?php
$queue = '/queue/foo';
$msg = 'bar';
/* connection */
try {
$stomp = new Stomp('tcp://localhost:61613');
} catch(StompException $e) {
die('Connection failed: ' . $e->getMessage());
}
/* send a message to the queue 'foo' */
$stomp->send($queue, $msg);
/* subscribe to messages from the queue 'foo' */
$stomp->subscribe($queue);
/* read a frame */
$frame = $stomp->readFrame();
if ($frame->body === $msg) {
/* acknowledge that the frame was received */
$stomp->ack($frame);
}
/* remove the subscription */
$stomp->unsubscribe($queue);
/* close connection */
unset($stomp);
?>
示例 #2 過(guò)程化風(fēng)格
<?php
$queue = '/queue/foo';
$msg = 'bar';
/* connection */
$link = stomp_connect('ssl://localhost:61612');
/* check connection */
if (!$link) {
die('Connection failed: ' . stomp_connect_error());
}
/* begin a transaction */
stomp_begin($link, 't1');
/* send a message to the queue 'foo' */
stomp_send($link, $queue, $msg, array('transaction' => 't1'));
/* commit a transaction */
stomp_commit($link, 't1');
/* subscribe to messages from the queue 'foo' */
stomp_subscribe($link, $queue);
/* read a frame */
$frame = stomp_read_frame($link);
if ($frame['body'] === $msg) {
/* acknowledge that the frame was received */
stomp_ack($link, $frame['headers']['message-id']);
}
/* remove the subscription */
stomp_unsubscribe($link, $queue);
/* close connection */
stomp_close($link);
?>
注意:
A transaction header may be specified, indicating that the message acknowledgment should be part of the named transaction.
Stomp is inherently asynchronous. Synchronous communication can be implemented adding a receipt header. This will cause methods to not return anything until the server has acknowledged receipt of the message or until read timeout was reached.