if (Tools::getValue('customer_firstname') && preg_match('/[a-z]/', Tools::getValue('customer_firstname')))
    $this->errors[] = Tools::displayError('You cannot create account.');
if (Tools::getValue('customer_lastname') && preg_match('/[a-z]/', Tools::getValue('customer_lastname')))
    $this->errors[] = Tools::displayError('You cannot create account.');

if ($error_phone) {
            $this->errors[] = Tools::displayError('You must register at least one phone number.');
        }

        //Проверяем на латинские буквы в ФИО
        if (Tools::getValue('customer_firstname') && preg_match('/[a-z]/', Tools::getValue('customer_firstname')))
        $this->errors[] = Tools::displayError('You cannot create account.');
        if (Tools::getValue('customer_lastname') && preg_match('/[a-z]/', Tools::getValue('customer_lastname')))
        $this->errors[] = Tools::displayError('You cannot create account.');

        $this->errors = array_unique(array_merge($this->errors, $customer->validateController()));

        // Check the requires fields which are settings in the BO
        $this->errors = $this->errors + $customer->validateFieldsRequiredDatabase();

if (Tools::getValue('customer_firstname') && preg_match('/[a-z]/', Tools::getValue('customer_firstname')))
        $this->errors[] = Tools::displayError('You cannot create account.');
if (Tools::getValue('customer_lastname') && preg_match('/[a-z]/', Tools::getValue('customer_lastname')))
        $this->errors[] = Tools::displayError('You cannot create account.');

if (Tools::getValue('firstname') && preg_match('/[a-z]/', Tools::getValue('firstname')))
        $this->errors[] = Tools::displayError('You cannot create account.');
if (Tools::getValue('lastname') && preg_match('/[a-z]/', Tools::getValue('lastname')))
        $this->errors[] = Tools::displayError('You cannot create account.');