src/Mysqli.php
public function init()
    {

        $this->where     = '';
        $this->field     = '*';
        $this->limit     = '';
        $this->group     = '';
        $this->order     = '';
        $this->join      = '';
        $this->chilidSql = false;
        $this->having    = '';
        $this->connect();
    }
public function init()
    {

        $this->where     = '';
        $this->field     = '*';
        $this->limit     = '';
        $this->group     = '';
        $this->order     = '';
        $this->join      = '';
        $this->chilidSql = false;
        $this->having    = '';
        $this->connect();
    }
构造Sql初始化