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0568144947
* Update pg-field-size.xml * Update pg-field-type.xml * Update pg-get-notify.xml * Update constants.xml
127 lines
3.2 KiB
XML
127 lines
3.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: cfeb14a38b666f6a3fc73da70f4a90fbe115e53f Maintainer: dallas Status: ready -->
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<!-- CREDITS: mowangjuanzi -->
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<refentry xml:id="function.pg-get-notify" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>pg_get_notify</refname>
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<refpurpose>获取 SQL NOTIFY 消息</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type class="union"><type>array</type><type>false</type></type><methodname>pg_get_notify</methodname>
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<methodparam><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>mode</parameter><initializer><constant>PGSQL_ASSOC</constant></initializer></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_get_notify</function> 取得 SQL 命令 <literal>NOTIFY</literal>
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生成的消息。要接收通知，必须发送 SQL 命令 <literal>LISTEN</literal>。
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>connection</parameter></term>
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<listitem>
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&pgsql.parameter.connection;
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>mode</parameter></term>
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<listitem>
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&pgsql.parameter.mode;
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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包含 <literal>NOTIFY</literal> 消息名称和后端 PID 的 <type>array</type>。如果服务器支持，该数组还包含服务器版本和有效负载。否则，如果没有
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<literal>NOTIFY</literal> 正在等待，则返回 &false;。
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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&pgsql.changelog.connection-object;
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>PostgreSQL NOTIFY 消息</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 occurred.\n";
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exit;
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}
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// 从其它进程监听 'author_updated' 消息
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pg_query($conn, 'LISTEN author_updated;');
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$notify = pg_get_notify($conn);
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if (!$notify) {
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echo "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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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>pg_get_pid</function></member>
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</simplelist>
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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:"~/.phpdoc/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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