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<?xml version="1.0" encoding="utf-8"?>
<refentry xml:id="pdo-pgsql.getnotify" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>Pdo\Pgsql::getNotify</refname>
<refpurpose>Get asynchronous notification</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="Pdo\\Pgsql">
<modifier>public</modifier> <type class="union"><type>array</type><type>false</type></type><methodname>Pdo\Pgsql::getNotify</methodname>
<methodparam choice="opt"><type>int</type><parameter>fetchMode</parameter><initializer><constant>PDO::FETCH_DEFAULT</constant></initializer></methodparam>
<methodparam choice="opt"><type>int</type><parameter>timeoutMilliseconds</parameter><initializer>0</initializer></methodparam>
</methodsynopsis>
<simpara>
Returns a result set representing a pending asynchronous notification.
</simpara>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>fetchMode</parameter></term>
<listitem>
<para>
The format the result set should be returned as,
one of the following constants:
<simplelist>
<member><constant>PDO::FETCH_DEFAULT</constant></member>
<member><constant>PDO::FETCH_BOTH</constant></member>
<member><constant>PDO::FETCH_ASSOC</constant></member>
<member><constant>PDO::FETCH_NUM</constant></member>
</simplelist>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>timeoutMilliseconds</parameter></term>
<listitem>
<simpara>
The length of time to wait for a response, in milliseconds.
</simpara>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<simpara>
If one or more notifications is pending, returns a single row,
with fields <literal>message</literal> and <literal>pid</literal>,
otherwise returns &false;.
</simpara>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<simpara>
A <exceptionname>ValueError</exceptionname> is thrown if
<parameter>fetchMode</parameter> is not one of the valid
<constant>PDO::FETCH_<replaceable>*</replaceable></constant>
constants.
</simpara>
<simpara>
A <exceptionname>ValueError</exceptionname> is thrown if
<parameter>timeoutMilliseconds</parameter> is less than <literal>0</literal>.
</simpara>
<simpara>
A <constant>E_WARNING</constant> is raised when
<parameter>timeoutMilliseconds</parameter> is greater than the value
that can be contained in a signed 32-bit integer, in which case it will be
the maximum value of a signed 32-bit integer.
</simpara>
</refsect1>
<!-- TODO?
<refsect1 role="examples">
&reftitle.examples;
<example xml:id="pdo-pgsql.getnotify.example.basic">
<title><methodname>Pdo\Pgsql::getNotify</methodname> example</title>
<simpara>
Description.
</simpara>
<programlisting role="php">
<![CDATA[
<?php
echo "Code example";
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Code example
]]>
</screen>
</example>
</refsect1>
-->
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>PDO::query</methodname></member>
<member><methodname>PDOStatement::fetch</methodname></member>
<member><methodname>PDOStatement::fetchAll</methodname></member>
</simplelist>
</refsect1>
</refentry>
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