public function where()
    {
        $operator = 'AND';
        // is the first time call where method ?
        if ($this->_where_str == '') {
            $this->_where_str = ' WHERE ';
        } else {
            $this->_where_str .= ' '.$operator.' ';
        }
        // build attribute, bind params
        $this->_condition_constructor(func_num_args(), func_get_args(), $this->_where_str);

        return $this;
    }
public function where()
    {
        $operator = 'AND';
        // is the first time call where method ?
        if ($this->_where_str == '') {
            $this->_where_str = ' WHERE ';
        } else {
            $this->_where_str .= ' '.$operator.' ';
        }
        // build attribute, bind params
        $this->_condition_constructor(func_num_args(), func_get_args(), $this->_where_str);

        return $this;
    }
public function where ( ) { $ operator = 'AND' ; // is the first time call where method ? if ( $ this -> _where_str == '' ) { $ this -> _where_str = ' WHERE ' ; } else { $ this -> _where_str .= ' ' . $ operator . ' ' ; } // build attribute, bind params $ this -> _condition_constructor ( func_num_args ( ) , func_get_args ( ) , $ this -> _where_str ) ; return $ this ; }
build where string

@return  self
build where string