private static function maybe_clear_value_for_default_blank_setting($field, &$value)
 {
     if (FrmField::is_option_true_in_object($field, 'default_blank') && $value == $field->default_value) {
         $value = '';
     }
 }
 public static function validate_phone_field(&$errors, $field, $value, $args)
 {
     if ($field->type == 'phone' || $field->type == 'text' && FrmField::is_option_true_in_object($field, 'format')) {
         $pattern = self::phone_format($field);
         if (!preg_match($pattern, $value)) {
             $errors['field' . $args['id']] = FrmFieldsHelper::get_error_msg($field, 'invalid');
         }
     }
 }