TP5 实现查询数据库返回json数据(返回json数据函数实例)

TP5 实现查询数据库返回json数据(返回json数据函数实例)

返回结果：

{"code":0,"msg":"\u6570\u636e\u8fd4\u56de\u6210\u529f","count":1000,"data":[{"id":617,"title":"\u5317\u4eac\u7406\u5de5\u5927\u5b66","flid":1,"pid":0,"uid":1,"price":0,"admin_name":null,"time":"2017-09-22 16:17:16"},{"id":618,"title":"\u5357\u5f00\u5927\u5b66","flid":1,"pid":0,"uid":1,"price":0,"admin_name":null,"time":"2017-09-22 16:17:28"}]}

一、把格式化json函数写到公共文件common.php中,common.php文件路径在：application/common.php 所有文件文件都可以引用

function json($code,$msg="",$count,$data=array()){  
            $result=array(  
              'code'=>$code,  
              'msg'=>$msg, 
        'count'=>$count,  
              'data'=>$data   
            );  
            //输出json  
            echo json_encode($result);  
            exit;  
}

二、查询数据  控制方式 Main.php

application\admin\controller\Main.php

<?php
namespace app\admin\controller;
use think\Controller;
use think\Validate;
use think\Request;
//use think\Db;
class Main extends controller
{
    public function index()
    {
        return $this -> fetch();
    }
//学校列表
    public function school()
    {
        $rs=db('school')->select();
        $rs1=json(0,'数据返回成功',1000,$rs); 
        dump($rs1);die;//打印出来
        return $this -> fetch();
    }