Standard\Controllers\ImageController::getWidth PHP Метод

    private function getWidth(string $imagePath) : int
    {
        $fragments = explode('-', $imagePath);
        if (count($fragments) < 2) {
            header(($_SERVER['SERVER_PROTOCOL'] ?? 'HTTP/1.0') . ' 500 ' . 'Server Error ImgErr00');
            die("Nope! Image fragments missing.");
        }
        $width = (int) explode('.', $fragments[1])[0];
        if (!in_array($width, $this->allowedWidths)) {
            header(($_SERVER['SERVER_PROTOCOL'] ?? 'HTTP/1.0') . ' 500 ' . 'Server Error ImgErr01');
            die("Nope! Disallowed width: " . $width . " for image " . $imagePath);
        }
        return $width;
    }