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Stomp
PHP Manual

# Stomp::ack

# stomp_ack

(PECL stomp >= 0.1.0)

Stomp::ack -- stomp_ack — Acknowledges consumption of a message

### Description

Object oriented style (method):

public bool Stomp::ack ( mixed `$msg` [, array `$headers` ] )

Procedural style:

bool stomp_ack ( resource `$link` , mixed `$msg` [, array `$headers` ] )

Acknowledges consumption of a message from a subscription using client acknowledgment.

### Parameters

`link`

  Procedural style only: The stomp link identifier returned by stomp_connect().

`msg`

  The message/messageId to be acknowledged.

`headers`

  Associative array containing the additional headers (example: receipt).

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Notes

> Note:

> A transaction header may be specified, indicating that the message acknowledgment should be part of the named transaction.

Tip

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.

### Examples

Example #1 Object oriented style

`<?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);
?>`

Example #2 Procedural style

`<?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);
?>`

Stomp::abort
Stomp::begin
Stomp
PHP Manual