buki\Pdox::join PHP Метод

    public function join($table, $field1 = null, $op = null, $field2 = null, $type = '')
    {
        $on = $field1;
        $table = $this->prefix . $table;
        if (!is_null($op)) {
            $on = !in_array($op, $this->op) ? $this->prefix . $field1 . ' = ' . $this->prefix . $op : $this->prefix . $field1 . ' ' . $op . ' ' . $this->prefix . $field2;
        }
        if (is_null($this->join)) {
            $this->join = ' ' . $type . 'JOIN' . ' ' . $table . ' ON ' . $on;
        } else {
            $this->join = $this->join . ' ' . $type . 'JOIN' . ' ' . $table . ' ON ' . $on;
        }
        return $this;
    }