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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.session-regenerate-id">
<refnamediv>
<refname>session_regenerate_id</refname>
<refpurpose>
Update the current session id with a newly generated one
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>session_regenerate_id</methodname>
<methodparam choice="opt"><type>bool</type><parameter>delete_old_session</parameter><initializer>false</initializer></methodparam>
</methodsynopsis>
<para>
<function>session_regenerate_id</function> will replace the current
session id with a new one, and keep the current session information.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>delete_old_session</parameter></term>
<listitem>
<para>
Whether to delete the old associated session file or not.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>4.3.3</entry>
<entry>
Since then, if session cookies are enabled, use of
<function>session_regenerate_id</function> will also submit a new
session cookie with the new session id.
</entry>
</row>
<row>
<entry>5.1.0</entry>
<entry>
Added the <parameter>delete_old_session</parameter> parameter.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A <function>session_regenerate_id</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
session_start();
$old_sessionid = session_id();
session_regenerate_id();
$new_sessionid = session_id();
echo "Old Session: $old_sessionid<br />";
echo "New Session: $new_sessionid<br />";
print_r($_SESSION);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>session_id</function></member>
<member><function>session_start</function></member>
<member><function>session_name</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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