if you want to jump to the page before authorization after successful authorization, use header ("Location:". $_ SERVER ["HTTP_REFERER"]) in the successful authorization controller;
find that you can"t get $_ SERVER [" HTTP_REFERER"]

code is as follows: there is a construction method to determine whether you have logged in or not to jump to the authorization page of the web page:

public function wxOauth()
      {
           var_dump($_SERVER["HTTP_REFERER"]);die();
          
          if(isset($_GET["code"])){
                $token=$this->weObj->getOauthAccessToken();
                
                $userinfo=$this->weObj->getOauthUserinfo($token["access_token"],$token["openid"]);
                // openid id id   id
            
                // $_SERVER["HTTP_REFERER"]
                
                
                echo $this->rurl;
                //header("location:".$this->rurl);
              
          }else{
              //$_SERVER["REQUEST_URI"]
              
             
              $this->rurl=$_SERVER["HTTP_REFERER"];
              
            $host="http://".$_SERVER["HTTP_HOST"].__SELF__;
            $url=$this->weObj->getOauthRedirect($host);
            
            
            header("location:".$url);
              
          }
        //  
            
            
            

        }