public static function pageClear(?string $page = null): void
    {
        if ($page === null) {
            $page = $_SERVER['PHP_SELF'];
        }
        self::clear($page);
    }
public static function pageClear(?string $page = null): void
    {
        if ($page === null) {
            $page = $_SERVER['PHP_SELF'];
        }
        self::clear($page);
    }
public static function pageClear ( ? string $ page = null ) : void { if ( $ page === null ) { $ page = $ _SERVER [ 'PHP_SELF' ] ; } self :: clear ( $ page ) ; }
Clear session by page filename.

@param string $page Default null which means current page PHP_SELF.
Clear session by page filename .