增删改查

include "../tools/Tool.class.php";
class ShopModel
{
    //查看所有
    public  function getAll(){
        $getAll=array();
        $a =0;
        $mysql= Tool::getLink();
        $sql="SELECT `demo1`.* FROM `demo1`";
        $r=$mysql->query($sql);
        while($row=$r->fetch_assoc()){
             $getAll[$a]=$row;
             $a++ ;
        }

        $r->free();
        $mysql->close();
        return $getAll;
    }

    //新增
    public  function  add($id,$name){
        $mysql=Tool::getLink();
        $sql="INSERT INTO`demo1`(`id`,`name`) VALUES ($id,'$name')";

        $mysql->query($sql);
        $mysql->close();
    }


    //删除
    public  function  delById($delId){
        $mysql=Tool::getLink();
        $sql="DELETE FROM demo1 where id=$delId";

        $mysql->query($sql);
        $mysql->close();
    }

    //查看
    public  function  look($lookId){
        $mysql=Tool::getLink();
        $sql="SELECT `demo1`.* FROM `demo1`  WHERE `id`=$lookId";
        $bool=$mysql->query($sql);
        $b=$bool->fetch_assoc();

        $bool->free();
        $mysql->close();
        return $b;
    }
    //修改
    public  function  modById($id,$name){
        $mysql=Tool::getLink();
        $sql="UPDATE `demo1` SET `name`='$name' WHERE `id`=$id";

        $mysql->query($sql);
        $mysql->close();

    }

//加入购物车
public  function  addToCart($cartId){
    $mysql=Tool::getLink();
    $sql="SELECT `demo1`.* FROM `demo1` WHERE `id`=$cartId" ;
    $r=$mysql->query($sql);
    $row=$r->fetch_assoc();

    $r->free();
    $mysql->close();
    return $row;
}

}