session_unset
(PHP 4, PHP 5, PHP 7, PHP 8)
session_unset — Free all session variables
Description
session_unset(): bool
The session_unset() function frees all session variables currently registered.
Parameters
This function has no parameters.
Return Values
Returns true on success or false on failure.
Changelog
| Version | Description |
|---|---|
| 7.2.0 | The return type of this function is bool now. Formerly, it has been void. |
Notes
Note:
If $_SESSION is used, use unset() to unregister a session variable, i.e.
unset ($_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.
Note:
Only use session_unset() for older deprecated code that does not use $_SESSION.
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