PHPMailer\PHPMailer\PHPMailer::idnSupported PHP Метод

idnSupported() публичный метод

Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the "intl" and "mbstring" PHP extensions.
public idnSupported ( ) : boolean
Результат boolean "true" if required functions for IDN support are present
    public function idnSupported()
    {
        return function_exists('idn_to_ascii') and function_exists('mb_convert_encoding');
    }