TP3.2校验微信公众号||小程序 服务器地址

1、在TP3.2里面，写一个控制器，用来校验微信公众号||小程序的服务器地址

1. <?php
2. namespace Home\Controller;
3. use Think\Controller;
4. header('Content-type:text');
5. define("TOKEN", "x**");
6.  
7. class XiaoKeFuController extends Controller {
8. public function index(){
9. if (isset($_GET['echostr'])) {
10. $this->valid();
11. }else{
12. $this->responseMsg();
13. }
14. }
15.  
16. public function valid()
17. {
18. $echoStr = $_GET["echostr"];
19. if($this->checkSignature()){
20. header('content-type:text');
21. echo $echoStr;
22. exit;
23. }else{
24. echo $echoStr.'+++'.TOKEN;
25. exit;
26. }