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give the two possibilities, it doesn't harm ;)
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@143323 c90b9560-bf6c-de11-be94-00142212c4b1
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.6 $ -->
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<!-- $Revision: 1.7 $ -->
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<!-- splitted from ./en/functions/session.xml, last change in rev 1.8 -->
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<refentry id="function.session-unset">
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<refnamediv>
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@ -23,7 +23,8 @@
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If <varname>$_SESSION</varname> (or
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<varname>$HTTP_SESSION_VARS</varname> for PHP 4.0.6 or less) is
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used, use <function>unset</function> to unregister a session
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variable, i.e. <literal>unset ($_SESSION['varname'])</literal>;
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variable, i.e. <literal>unset ($_SESSION['varname']);</literal> and
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<literal>$_SESSION = array();</literal> to free all the registred variables.
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</para>
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</note>
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<para>
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