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https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@297028 c90b9560-bf6c-de11-be94-00142212c4b1
115 lines
3.2 KiB
XML
115 lines
3.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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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>Get the last error message string of a connection</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>resource</type><parameter>connection</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_last_error</function> returns the last error message
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for a given <parameter>connection</parameter>.
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</para>
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<para>
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Error messages may be overwritten by internal PostgreSQL (libpq)
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function calls. It may not return an appropriate error message if
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multiple errors occur inside a PostgreSQL module function.
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</para>
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<para>
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Use <function>pg_result_error</function>, <function>pg_result_error_field</function>,
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<function>pg_result_status</function> and
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<function>pg_connection_status</function> for better error handling.
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</para>
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<note>
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<para>
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This function used to be called <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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<para>
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PostgreSQL database connection resource. When
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<parameter>connection</parameter> is not present, the default connection
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is used. The default connection is the last connection made by
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<function>pg_connect</function> or <function>pg_pconnect</function>.
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</para>
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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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A <type>string</type> containing the last error message on the
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given <parameter>connection</parameter>, or &false; on error.
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</para>
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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> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
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// Query that fails
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$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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