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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<refentry xml:id="function.mqseries-back" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>mqseries_back</refname>
<refpurpose>MQSeries MQBACK</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<methodname>mqseries_back</methodname>
<methodparam>
<type>resource</type>
<parameter>hconn</parameter>
</methodparam>
<methodparam>
<type>resource</type>
<parameter>compCode</parameter>
</methodparam>
<methodparam>
<type>resource</type>
<parameter>reason</parameter>
</methodparam>
</methodsynopsis>
<para>
The
<function>mqseries_back</function>
(MQBACK) call indicates to the queue manager that all the message gets and
puts that have occurred since the last syncpoint are to be backed out.
Messages put as part of a unit of work are deleted; messages retrieved as
part of a unit of work are reinstated on the queue.
</para>
<para>
Using
<function>mqseries_back</function>
only works in conjunction with
<function>mqseries_begin</function>
and only function when connecting directly to a Queueu manager. Not via the
mqclient interface.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term>
<parameter>hConn</parameter>
</term>
<listitem>
<para>Connection handle.</para>
<para>This handle represents the connection to the queue manager.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<parameter>compCode</parameter>
</term>
<listitem>
<para>Completion code.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<parameter>reason</parameter>
</term>
<listitem>
<para>Reason code qualifying the compCode.</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>&return.void;</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>
<function>mqseries_back</function>
example
</title>
<programlisting role="php">
<![CDATA[
<?php
mqseries_back($conn, $comp_code, $reason);
if ($comp_code !== MQSERIES_MQCC_OK) {
printf("CompCode:%d Reason:%d Text:%s<br>\n", $comp_code, $reason, mqseries_strerror($reason));
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
<function>mqseries_back</function>
will not function when using MQSeries Client to connect to a Queueu Manager.
</para>
</note>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>mqseries_conn</function></member>
<member><function>mqseries_connx</function></member>
<member><function>mqseries_begin</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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