Think\Db\Query::getFieldsBind PHP Method

    public function getFieldsBind($options)
    {
        $types = $this->getFieldsType($options);
        $bind = [];
        if ($types) {
            foreach ($types as $key => $type) {
                $bind[$key] = $this->getFieldBindType($type);
            }
        }
        return $bind;
    }