Added new functions

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@100137 c90b9560-bf6c-de11-be94-00142212c4b1

reference/pgsql/functions/pg-get-notify.xml

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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- $Revision: 1.1 $ -->
+  <refentry id="function.pg-get-notify">
+   <refnamediv>
+    <refname>pg_get_notify</refname>
+    <refpurpose>Ping database connection</refpurpose>
+   </refnamediv>
+   <refsect1>
+    <title>Description</title>
+     <methodsynopsis>
+      <type>array</type><methodname>pg_get_notify</methodname>
+      <methodparam><type>resource</type><parameter>connection</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>result_type</parameter></methodparam>
+     </methodsynopsis>
+    <para>
+     <function>pg_get_notify</function> gets notify message sent by
+     <literal>NOTIFY</literal> SQL command. To recieve nofigy
+     messages, <literal>LISTEN</literal> SQL command must be
+     issued. If there is notify message on the connection, array
+     contains message name and backend PID is returned. If there is no
+     message, &false; is returned.
+    </para>
+    <para>
+     See also <function>pg_get_pid</function>
+    </para>
+    <para>
+     <example>
+      <title>PostgreSQL NOTIFY message</title>
+      <programlisting role="php">
+<![CDATA[
+<?php 
+$conn = pg_pconnect ("dbname=publisher");
+if (!$conn) {
+    echo "An error occured.\n";
+    exit;
+}
+
+// Listen 'author_updated' message from other processes
+pq_query($conn, 'LISTEN author_updated;');
+$notify = pg_get_notify($conn);
+if (!$notify)
+    print("No messages\n");
+else
+    print_r($notify);
+?>
+]]>
+      </programlisting>
+     </example>
+    </para>
+   </refsect1>
+  </refentry>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"../../../../manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->

reference/pgsql/functions/pg-get-pid.xml

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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- $Revision: 1.1 $ -->
+  <refentry id="function.pg-get-pid">
+   <refnamediv>
+    <refname>pg_get_pid</refname>
+    <refpurpose>Ping database connection</refpurpose>
+   </refnamediv>
+   <refsect1>
+    <title>Description</title>
+     <methodsynopsis>
+      <type>int</type><methodname>pg_get_pid</methodname>
+      <methodparam><type>resource</type><parameter>connection</parameter></methodparam>
+     </methodsynopsis>
+    <para>
+     <function>pg_get_pid</function> gets backend (database server
+     process) PID. PID is useful to check if <literal>NOTIFY</literal>
+     message is sent from other process or not.
+    </para>
+    <para>
+     See also <function>pg_get_notify</function>
+    </para>
+    <para>
+     <example>
+      <title>PostgreSQL backend PID</title>
+      <programlisting role="php">
+<![CDATA[
+<?php 
+$conn = pg_pconnect ("dbname=publisher");
+if (!$conn) {
+    echo "An error occured.\n";
+    exit;
+}
+
+// Backend process PID. Use PID with pg_get_notify()
+$pid = pg_get_pid($conn);
+?>
+]]>
+      </programlisting>
+     </example>
+    </para>
+   </refsect1>
+  </refentry>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"../../../../manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->