(PHP 4, PHP 5, PHP 7)
session_unset — Free all session variables
session_unset ( ) : bool
The session_unset() function frees all session variables currently registered.
Returns true on success or false on failure.
| Version | Description |
|---|---|
| 7.2.0 | The return type of this function is bool now. Formerly, it has been void. |
Note:
If $_SESSION is used, use unset() to unregister a session variable, i.e.
unset ($_SESSION['varname']);.
Do NOT unset the whole $_SESSION with unset($_SESSION) as this will disable the registering of session variables through the $_SESSION superglobal.
Note:
Only use session_unset() for older deprecated code that does not use $_SESSION.
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https://www.php.net/manual/en/function.session-unset.php