Adldap\Query\Builder::newWhereBinding PHP Method

    protected function newWhereBinding($field, $operator, $value = null, $type = 'and')
    {
        switch (strtolower($type)) {
            case 'and':
                return new Where($field, $operator, $value);
            case 'or':
                return new OrWhere($field, $operator, $value);
            default:
                throw new InvalidArgumentException("Invalid binding type: {$type}.");
        }
    }