Source of: /manual/en/function.session-unset.php


<?php

include_once $_SERVER['DOCUMENT_ROOT'] . '/include/shared-manual.inc';

$TOC = array();

$PARENTS = array();

include_once dirname(__FILE__) ."/toc/ref.session.inc";

$setup = array (

  'home' => 

  array (

    0 => 'index.php',

    1 => 'PHP Manual',

  ),

  'head' => 

  array (

    0 => 'UTF-8',

    1 => 'en',

  ),

  'this' => 

  array (

    0 => 'function.session-unset.php',

    1 => 'session_unset',

  ),

  'up' => 

  array (

    0 => 'ref.session.php',

    1 => 'Session Functions',

  ),

  'prev' => 

  array (

    0 => 'function.session-unregister.php',

    1 => 'session_unregister',

  ),

  'next' => 

  array (

    0 => 'function.session-write-close.php',

    1 => 'session_write_close',

  ),

);

$setup["toc"] = $TOC;

$setup["parents"] = $PARENTS;

manual_setup($setup);



manual_header();

?>

<div id="function.session-unset" class="refentry">

 <div class="refnamediv">

  <h1 class="refname">session_unset</h1>

  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">session_unset</span> &mdash; <span class="dc-title">Free all session variables</span></p>



 </div>

 

 <a name="function.session-unset.description"></a><div class="refsect1 description">

  <h3 class="title">Description</h3>

  <div class="methodsynopsis dc-description">

   <span class="type"><span class="type void">void</span></span> <span class="methodname"><b>session_unset</b></span>

    ( <span class="methodparam">void</span>

   )</div>



  <p class="para rdfs-comment">

   The <b>session_unset()</b> function frees all session variables

   currently registered.

  </p>

 </div>





 <a name="function.session-unset.returnvalues"></a><div class="refsect1 returnvalues">

  <h3 class="title">Return Values</h3>

  <p class="para">

   No value is returned.

  </p>

 </div>





 <a name="function.session-unset.notes"></a><div class="refsect1 notes">

  <h3 class="title">Notes</h3>

  <blockquote><p><b class="note">Note</b>: 

   

    If <var class="varname"><a href="reserved.variables.session.php" class="classname">$_SESSION</a></var> (or <var class="varname">$HTTP_SESSION_VARS</var>

    for PHP 4.0.6 or less) is used, use <a href="function.unset.php" class="function">unset()</a> to

    unregister a session variable, i.e.

    <i>unset ($_SESSION[&#039;varname&#039;]);</i>.

   <br />

  </p></blockquote>

  <div class="caution"><b class="caution">Caution</b>

   <p class="para">

    Do NOT unset the whole <var class="varname"><a href="reserved.variables.session.php" class="classname">$_SESSION</a></var> with

    <i>unset($_SESSION)</i> as this will disable the registering

    of session variables through the <var class="varname"><a href="reserved.variables.session.php" class="classname">$_SESSION</a></var> superglobal.

   </p>

  </div>

 </div>





</div><?php manual_footer(); ?>
Our source is open

Source of: /manual/en/function.session-unset.php
