mirror of
https://github.com/sigmasternchen/php-doc-en
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227a33e724
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@173026 c90b9560-bf6c-de11-be94-00142212c4b1
72 lines
1.9 KiB
XML
72 lines
1.9 KiB
XML
<?xml version='1.0' encoding='iso-8859-1'?>
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<!-- $Revision: 1.2 $ -->
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<!-- Generated by xml_proto.php v2.1. Found in /scripts directory of phpdoc. -->
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<refentry id="function.PDO-rollBack">
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<refnamediv>
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<refname>PDO::rollBack</refname>
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<refpurpose>
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Rolls back a transaction
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>bool</type><methodname>PDO::rollBack</methodname>
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<void/>
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</methodsynopsis>
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&warn.experimental.func;
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<para>
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When issued against databases that support transactions,
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<function>PDO::rollBack</function> rolls back any work in progress and
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and returns the connection state to autocommit mode.
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</para>
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<para>
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You must issue <function>PDO::beginTransaction</function> to set the
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connection state to manual commit mode before issuing
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<function>PDO::rollBack</function> has any effect.
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</para>
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<example><title>Roll back a transaction</title>
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<programlisting role='php'>
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<![CDATA[
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<?php
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/* Begin a transaction, turning off autocommit */
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$dbh->beginTransaction();
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/* Change the database schema and data */
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$sth = $dbh->exec("DROP TABLE fruit");
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$sth = $dbh->exec("UPDATE dessert
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SET name = 'hamburger'");
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/* Recognize mistake and roll back changes */
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$sth->rollBack();
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/* Database connection is now back in autocommit mode */
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?>
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]]>
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</programlisting>
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</example>
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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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