Thinkphp5实现接口嵌套

        $list =  Db::table('pet_info')->select();
        
        //查询图片
    //   return json_encode($list);
      for($i = 0;$i< count($list);$i++){
          
            $pid = $list[$i]['id'];
            $list[$i]['imgsrc']=Db::table('upload_img')->where("uoload_pet_id",$pid)->select();
            
        }
        $this->assign('list',$list);
    //   return json_encode($list);
        return $this->fetch();

[{
	"id": 1,
	"pet_name": "Ceshi ",
	"pet_src1": "",
	"pet_src2": "",
	"pet_src3": "",
	"kinds": 0,
	"pet_sex": 0,
	"pet_age": 0,
	"pet_health": 0,
	"pet_breed": "",
	"pet_desc": "",
	"pet_publi": "15368666279",
	"pub_name": "\u547c\u547c\u547c",
	"pub_address": "\u54c8\u54c8\u54c8",
	"pub_phone": "11111111111",
	"imgsrc": [
	{
			"id": 1,
			"src": "xxxxx.png "
	},
	{
			"id": 2,
			"src": "xxxxx.png "
	}
	]
}]