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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 332017 $ -->
<refentry xml:id="amqpexchange.publish" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>AMQPExchange::publish</refname>
<refpurpose>Publish a message to an exchange.</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>bool</type><methodname>AMQPExchange::publish</methodname>
<methodparam><type>string</type><parameter>message</parameter></methodparam>
<methodparam><type>string</type><parameter>routing_key</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>AMQP_NOPARAM</constant></initializer></methodparam>
<methodparam choice="opt"><type>array</type><parameter>attributes</parameter><initializer>array()</initializer></methodparam>
</methodsynopsis>
<para>
Publish a message to the exchange represented by the <classname>AMQPExchange</classname> object.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>message</parameter></term>
<listitem>
<para>
The message to publish.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>routing_key</parameter></term>
<listitem>
<para>
The routing key to which to publish.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>flags</parameter></term>
<listitem>
<para>
One or more of <constant>AMQP_MANDATORY</constant> and
<constant>AMQP_IMMEDIATE</constant>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>attributes</parameter></term>
<listitem>
<para>
<table>
<title>Supported indexes</title>
<tgroup cols="3">
<thead>
<row>
<entry>key</entry>
<entry>Description</entry>
<entry>Default value</entry>
</row>
</thead>
<tbody>
<row>
<entry><emphasis>content_type</emphasis></entry>
<entry></entry>
<entry><literal>text/plain</literal></entry>
</row>
<row>
<entry><emphasis>content_encoding</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>message_id</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>user_id</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>app_id</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>delivery_mode</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>priority</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>timestamp</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>expiration</emphasis></entry>
<entry>time in milliseconds</entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>type</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>reply_to</emphasis></entry>
<entry></entry>
<entry>NULL</entry>
</row>
<row>
<entry><emphasis>headers</emphasis></entry>
<entry>custom attributes to pass along with message</entry>
<entry>array</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
Throws an <classname>AMQPExchangeException</classname> on failure.
</para>
<para>
Throws <classname>AMQPChannelException</classname> if the channel is not open.
</para>
<para>
Throws <classname>AMQPConnectionException</classname> if the connection to the broker was lost.
</para>
</refsect1>
</refentry>
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