yii\filters\Cors::headerizeToPhp PHP Метод

headerizeToPhp() защищенный Метод

Convert any string (including php headers with HTTP prefix) to header format like : * X-Pingother -> HTTP_X_PINGOTHER * X PINGOTHER -> HTTP_X_PINGOTHER
protected headerizeToPhp ( string $string ) : string
$string string string to convert
Результат string the result in "php $_SERVER header" format
    protected function headerizeToPhp($string)
    {
        return 'HTTP_' . strtoupper(str_replace([' ', '-'], ['_', '_'], $string));
    }