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* Update pg-lo-create.xml * Update pg-lo-open.xml * Update pg-field-num.xml * Update pg-field-size.xml * Update pg-field-type.xml * Update pg-free-result.xml * Update pg-last-error.xml * Update pg-last-oid.xml * Update pg-lo-close.xml * Update pg-lo-export.xml * Update pg-lo-unlink.xml * Update pg-lo-read-all.xml * Update pg-lo-read.xml * Update pg-lo-read.xml
130 lines
3.5 KiB
XML
Executable File
130 lines
3.5 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: c2eca73ef79ebe78cebb34053e41b565af504c4f Maintainer: dallas Status: ready -->
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<!-- CREDITS: mowangjuanzi -->
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<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.2 -->
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<refentry xml:id="function.pg-last-error" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>pg_last_error</refname>
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<refpurpose>得到某连接的最后一条错误信息</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>string</type><methodname>pg_last_error</methodname>
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<methodparam choice="opt"><type class="union"><type>PgSql\Connection</type><type>null</type></type><parameter>connection</parameter><initializer>&null;</initializer></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_last_error</function> 返回指定 <parameter>connection</parameter> 的最后一条错误信息。
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</para>
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<para>
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错误信息可能会被调用的 PostgreSQL(libpq) 内部函数覆盖。如果 PostgreSQL 的内部模块函数产生了多个错误，则可能不能返回适当的错误信息。
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</para>
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<para>
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使用 <function>pg_result_error</function>、<function>pg_result_error_field</function>、<function>pg_result_status</function>
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和 <function>pg_connection_status</function> 用于更好的错误处理。
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</para>
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<note>
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<para>
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本函数以前的名字为 <function>pg_errormessage</function>。
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</para>
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</note>
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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-with-nullable-default;
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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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<type>string</type>，包含指定 <parameter>connection</parameter> 的最后一条错误消息。
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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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<row>
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<entry>8.0.0</entry>
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<entry>
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<parameter>connection</parameter> 现在可为 null。
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</entry>
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</row>
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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><function>pg_last_error</function> 示例</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
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// 查询失败
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$res = pg_query($dbconn, "select * from doesnotexist");
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echo pg_last_error($dbconn);
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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_result_error</function></member>
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<member><function>pg_result_error_field</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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