mirror of
https://github.com/sigmasternchen/php-doc-en
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b6079d60bb
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@118393 c90b9560-bf6c-de11-be94-00142212c4b1
72 lines
1.9 KiB
XML
72 lines
1.9 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.2 $ -->
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<refentry id="function.pg-get-notify">
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<refnamediv>
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<refname>pg_get_notify</refname>
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<refpurpose>Ping database connection</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>array</type><methodname>pg_get_notify</methodname>
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<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>result_type</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_get_notify</function> gets notify message sent by
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<literal>NOTIFY</literal> SQL command. To recieve notify
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messages, <literal>LISTEN</literal> SQL command must be
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issued. If there is notify message on the connection, array
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contains message name and backend PID is returned. If there is no
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message, &false; is returned.
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</para>
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<para>
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See also <function>pg_get_pid</function>
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</para>
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<para>
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<example>
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<title>PostgreSQL NOTIFY message</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = pg_pconnect ("dbname=publisher");
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if (!$conn) {
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echo "An error occured.\n";
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exit;
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}
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// Listen 'author_updated' message from other processes
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pq_query($conn, 'LISTEN author_updated;');
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$notify = pg_get_notify($conn);
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if (!$notify)
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print("No messages\n");
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else
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print_r($notify);
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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