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.
Php session unset Function syntax tag
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Php session unset syntax tutorial
php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.