Most Referenced Functions
  » google_pagerank()
  » preg_replace()
  » imagecreatefrompng()
  » site_pageranks()
  » imagepng()
  » imagedestroy()
  » imagestring()
  » imagecolorallocate()
  » htmlentities()
  » preg_match()
  » fopen()
  » header()
  » getimagesize()
  » preg_match_all()
  » session_start()
  » htmlspecialchars()
  » ob_start()
  » ob_flush()
  » strstr()
  » flush()
  » strpos()
  » setcookie()
  » str_replace()
  » array2vars()
  » nl2br()
  » preg_split()
  » ereg()
  » ereg_replace()
  » urlencode()
  » readgzfile()

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PHP Functions

Function: session_unset

(PHP 4, PHP 5)

session_unset --  Free all session variables

Description

void session_unset ( void )

The session_unset() function frees all session variables currently registered.

Note: If $_SESSION (or $HTTP_SESSION_VARS for PHP 4.0.6 or less) is used, use unset() to unregister a session variable, i.e. unset ($_SESSION['varname']); .

Caution

Do NOT unset the whole $_SESSION with unset($_SESSION) as this will disable the registering of session variables through the $_SESSION superglobal.

Related Function(s)

  • unset()
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