public static function delete($key)
{
empty(self::$prefix) && (self::$prefix = Config::get('session_prefix'));
if (is_array($key)) {
foreach ($key as $k) {
if (isset($_SESSION[self::$prefix . $k])) {
unset($_SESSION[self::$prefix . $k]);
}
}
} else {
if (isset($_SESSION[self::$prefix . $key])) {
unset($_SESSION[self::$prefix . $key]);
}
}
return true;
}