mirror of
https://github.com/sigmasternchen/php-doc-en
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c030e2adf7
- All id attributes are now xml:id - Add docbook namespace to all root elements - Replace <ulink /> with <link xlink:href /> - Minor markup fixes here and there git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@238160 c90b9560-bf6c-de11-be94-00142212c4b1
124 lines
3.4 KiB
XML
124 lines
3.4 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.15 $ -->
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<refentry xml:id="function.mysql-insert-id" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>mysql_insert_id</refname>
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<refpurpose>Get the ID generated from the previous INSERT operation</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>int</type><methodname>mysql_insert_id</methodname>
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<methodparam choice="opt"><type>resource</type><parameter>link_identifier</parameter></methodparam>
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</methodsynopsis>
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<para>
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Retrieves the ID generated for an AUTO_INCREMENT column by the previous
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INSERT query.
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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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&mysql.linkid.description;
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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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The ID generated for an AUTO_INCREMENT column by the previous
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INSERT query on success, <literal>0</literal> if the previous
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query does not generate an AUTO_INCREMENT value, or &false; if
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no MySQL connection was established.
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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>mysql_insert_id</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
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if (!$link) {
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die('Could not connect: ' . mysql_error());
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}
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mysql_select_db('mydb');
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mysql_query("INSERT INTO mytable (product) values ('kossu')");
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printf("Last inserted record has id %d\n", mysql_insert_id());
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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="notes">
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&reftitle.notes;
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<caution>
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<para>
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<function>mysql_insert_id</function> converts the return type of
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the native MySQL C API function
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<literal>mysql_insert_id()</literal> to a type of
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<literal>long</literal> (named <type>int</type> in PHP).
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If your AUTO_INCREMENT column has a column type of BIGINT,
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the value returned by <function>mysql_insert_id</function>
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will be incorrect. Instead, use the internal MySQL SQL function
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<literal>LAST_INSERT_ID()</literal> in an SQL query.
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</para>
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</caution>
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<note>
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<para>
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Because <function>mysql_insert_id</function> acts on the last performed
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query, be sure to call <function>mysql_insert_id</function> immediately
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after the query that generates the value.
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</para>
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</note>
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<note>
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<para>
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The value of the MySQL SQL function
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<literal>LAST_INSERT_ID()</literal> always contains the most
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recently generated AUTO_INCREMENT value, and is not reset
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between queries.
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</para>
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</note>
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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>mysql_query</function></member>
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<member><function>mysql_info</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:"../../../../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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