为什么我的$res的值是null http_curl中所有参数都有值传过去

Question

 function http_curl($url,$type='get',$res='json',$arr=''){
        // 1.初始化curl
        $ch   = curl_init();
        // $url     = "https://www.imooc.com/";
        // 2.设置curl参数
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        if($type=='post'){
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $arr);
        }
        // 3.采集
        $output  = curl_exec($ch);
        // 4.关闭
        curl_close($ch);
        if($res=="json"){
            if(curl_error($ch)){
                return curl_error($ch);
            }else{
                return json_decode($output,true);
            }
            
        }      
    }
    
 public function getWxAccessToken(){
         if($_SESSION['access_token'] && $_SESSION['expire_time']>time()){
            return $_SESSION['access_token'];
        }else{
            $appid = 'wx87597d10a4f61fc3';
            $appsecret     = "bfcde589d19fd16c61d1142633f6872b";
            $url ="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;  
            $res = $this->http_curl($url,'get','json');
            $access_token = $res['access_token'];
            $_SESSION['access_token'] = $access_token;
            $_SESSION['expire_time'] =time()+7000;
            return $access_token;
            var_dump($access_token);
        }
    }
    
    public function definedItem(){
        $access_token = $this->getWxAccessToken(); 
        $url =" https://api.weixin.qq.com/cgi-bin/menu/create?access_token=".$access_token;
        $postArr = array(
            'button'=>array(
                        array(
                                 'name'=>urlencode('菜单一'),
                                  'type'=>'click',
                                  'key'=>'item1'
                        ),//第一个一级菜单
                        array(
                                'name'=>urlencode('菜单二'),
                                'sub_button'=>array(
                                                array(
                                                    'name'=>urlencode('歌曲'),
                                                   'type'=>'click',
                                                   'key'=>'songs'
                                                ),
                                                 array(
                                                   'name'=>urlencode('百度'),
                                                   'type'=>'view',
                                                   'url'=>'http://wap.baidu.com/'
                                                ),
                                                
                                    ),
                        ),//第二个一级菜单
                        array(
                            'type'=>'click',
                            'name'=>'赞一下我们',
                            'key'=>'V1001_GOOD'
                        ),//第三个一级菜单
            ),   
        );
        $postJosn =urldecode(json_encode($postArr));
        $res = $this->http_curl($url,'post','josn',$postJosn);
        var_dump($res);

    }

Answer 1

你的请求地址前边肯定有个空格

Answer 2

返回是null 但是菜单已经创建成功了 

Answer 3

可能是你token过期了，菜单生成失败