php-doc-en/reference/sam/functions/SAM-Connection-receive.xml

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<refentry xml:id='function.samconnection-receive' xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>SAMConnection->receive</refname>
  <refpurpose>
   Receive a message from a queue or subscription.
  </refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <classsynopsis>
   <ooclass><classname>SAMConnection</classname></ooclass>
   <methodsynopsis>
    <type>SAMMessage</type><methodname>receive</methodname>
    <methodparam><type>string</type><parameter>target</parameter></methodparam>
    <methodparam choice='opt'><type>array</type><parameter>properties</parameter></methodparam>
   </methodsynopsis>
  </classsynopsis>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>target</parameter></term>
     <listitem>
      <para>
       The identity of the queue, topic or subscription from which to receive
       the message.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>properties</parameter></term>
     <listitem>
      <para>
       An optional associative array of properties describing other
       parameters to control the receive operation.
       <informaltable>
        <tgroup cols="2">
         <thead>
          <row>
           <entry>Property name</entry>
           <entry>Possible values</entry>
          </row>
         </thead>
         <tbody>
          <row>
           <entry>SAM_CORRELID</entry>
           <entry>
            Used to request selection of the message to receive based upon
            the correlation id string of the message.
           </entry>
          </row>
          <row>
           <entry>SAM_MESSAGEID</entry>
           <entry>
            Used to request selection of the message to receive based upon
            the message id string of the message.
           </entry>
          </row>
          <row>
           <entry>SAM_WAIT</entry>
           <entry>
            Timeout value in milliseconds to control how long the request
            should block waiting to receive a message before returning with
            a failure if no message is available on the queue or topic. The
            default value is 0 meaning wait indefinitely and should be used
            with caution as the request may wait until the overall PHP script
            processing time limit has expired if no message becomes available.
           </entry>
          </row>
         </tbody>
        </tgroup>
       </informaltable>
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   This method returns a SAMMessage object or &false; if an error occurs.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Receiving a message from a queue</title>
    <programlisting role="php">
<![CDATA[
<?php
$msg = $conn->receive('queue://receive/test');

if (!$msg) {
  // The receive failed!
  echo "Receive failed ($conn->errno) $conn->error";
}
?>
]]>
    </programlisting>
   </example>
  </para>
  <para>
   <example>
    <title>Receiving a message from a queue with options</title>
    <para>
     In this example the SAM_CORRELID option is used to specify a correlation
     id string to be used to identify the message to receive. A wait timeout
     of 10 seconds is also specified.
    </para>
    <programlisting role="php">
<![CDATA[
<?php

$msg = $conn->receive('queue://receive/test', array(SAM_CORRELID => $token, SAM_WAIT => 10000));

?>
]]>
    </programlisting>
   </example>
  </para>
  <para>
   <example>
    <title>Receiving a message from a subscription</title>
    <para>
     In this example we show how to receive a message from a subscription id.
    </para>
    <programlisting role="php">
<![CDATA[
<?php
$msg = $conn->receive($subscriptionName);

if (!$msg) {
  // The receive failed!
  echo "Receive failed ($conn->errno) $conn->error";
}
?>
]]>
    </programlisting>
    <para>
     Please note that $subscriptionName is a subscription id returned from an
     earlier subscribe call.
    </para>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><xref linkend="function.samconnection-send" /></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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