微信小程序与PHP数据加交互

小程序 js源码

Page({
  data: {

  },
  onShow: function () {
    var that = this
    wx.request({
      url: 'http://llxhyj.cn/php/index.php/Yx/Test/test',
      headers: {
        'Content-Type': 'application/json'
      },
      success: function (res) {
        console.log(res.data)
      }
    })
  }
})

PHP源码

<?php
namespace Wxwater\Controller;
use Think\Controller;
class TestController extends Controller{
    public function test(){
        $model = M('user');
        $data = $model -> field('id ,username ,sex') -> where() -> select();
        // dump($data);
        echo json_encode($data);
    }
}

打印的内容

[{"id":"56","username":"admin","sex":"\u5973"},{"id":"57","username":"user","sex":"\u7537"},{"id":"58","username":"consumer","sex":"\u7537"},{"id":"60","username":"","sex":""}]

但是在微信小程序开发工具的控制台上却显示

和学习的视频上显示的不一样，求大神解释一下这是什么原因，应该怎样写

你这个是php接口报错了