LdapTools\Utilities\MBString::array_change_value_case PHP Метод

    public static function array_change_value_case(array $values)
    {
        return array_map(self::class . '::strtolower', $values);
    }

 /**
  * {@inheritdoc}
  */
 public function fromLdap($value)
 {
     $ldapType = ['Unknown'];
     $value = MBString::array_change_value_case($value);
     foreach ($this->getOptions() as $type => $classes) {
         if (MBString::array_change_value_case($classes) == $value) {
             $ldapType = [$type];
             break;
         }
     }
     return $ldapType;
 }