archived-doc-en/reference/stomp/stomp/readframe.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->

<refentry xml:id="stomp.readframe" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>Stomp::readFrame</refname>
  <refname>stomp_read_frame</refname>
  <refpurpose>Reads the next frame</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <para>&style.oop; (method):</para>
   <methodsynopsis>
   <modifier>public</modifier> <type>stompframe</type><methodname>Stomp::readFrame</methodname>
   <methodparam choice="opt"><type>string</type><parameter>class_name</parameter><initializer>"stompFrame"</initializer></methodparam>
   </methodsynopsis>
  <para>&style.procedural;:</para>
  <methodsynopsis>
   <type>array</type><methodname>stomp_read_frame</methodname>
   <methodparam><type>resource</type><parameter>link</parameter></methodparam>
  </methodsynopsis>
  <para>
   Reads the next frame. It is possible to instantiate an object of a specific class, and pass parameters to that class's constructor. 
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    &stomp.param.link;
    <varlistentry>
     <term><parameter>class_name</parameter></term>
     <listitem>
      <para>
        The name of the class to instantiate. If not specified, a stompFrame object is returned.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  &stomp.note.transaction;
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>PECL stomp 0.4.0</entry>
       <entry>
        <parameter>class_name</parameter> parameter was added.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>&style.oop;</title>
    <programlisting role="php">
<![CDATA[
<?php

/* connection */
try {
    $stomp = new Stomp('tcp://localhost:61613');
} catch(StompException $e) {
    die('Connection failed: ' . $e->getMessage());
}

/* subscribe to messages from the queue 'foo' */
$stomp->subscribe('/queue/foo');

/* read a frame */
var_dump($stomp->readFrame());

/* close connection */
unset($stomp);

?>
]]>
     </programlisting>
     &example.outputs.similar;
     <screen>
<![CDATA[
object(StompFrame)#2 (3) {
  ["command"]=>
  string(7) "MESSAGE"
  ["headers"]=>
  array(5) {
    ["message-id"]=>
    string(41) "ID:php.net-55293-1257226743606-4:2:-1:1:1"
    ["destination"]=>
    string(10) "/queue/foo"
    ["timestamp"]=>
    string(13) "1257226805828"
    ["expires"]=>
    string(1) "0"
    ["priority"]=>
    string(1) "0"
  }
  ["body"]=>
  string(3) "bar"
}
]]>
    </screen>
   </example>
  </para>
  <para>
   <example>
    <title>&style.procedural;</title>
    <programlisting role="php">
<![CDATA[
<?php

/* connection */
$link = stomp_connect('ssl://localhost:61612');

/* check connection */
if (!$link) {
    die('Connection failed: ' . stomp_connect_error());
}

/* subscribe to messages from the queue 'foo' */
stomp_subscribe($link, '/queue/foo');

/* read a frame */
$frame = stomp_read_frame($link);

/* close connection */
stomp_close($link);

?>
]]>
     </programlisting>
     &example.outputs.similar;
     <screen>
<![CDATA[
array(3) {
  ["command"]=>
  string(7) "MESSAGE"
  ["body"]=>
  string(3) "bar"
  ["headers"]=>
  array(6) {
    ["transaction"]=>
    string(2) "t1"
    ["message-id"]=>
    string(41) "ID:php.net-55293-1257226743606-4:3:-1:1:1"
    ["destination"]=>
    string(10) "/queue/foo"
    ["timestamp"]=>
    string(13) "1257227037059"
    ["expires"]=>
    string(1) "0"
    ["priority"]=>
    string(1) "0"
  }
}
]]>
    </screen>
   </example>
  </para>
 </refsect1>

</refentry>

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