[php]微信测试号调取acces_token，自定义菜单以及被动响应消息

 <?php
 /**自己写的
　　*/
 $wechatObj = new wechatCallbackapiTest();
 $wechatObj->valid();
 $wechatObj->responseMsg();//响应消息
 $wechatObj->set_menu();//自定义菜单

 class wechatCallbackapiTest
 {
 10 /**
 11  * 绑定url、token信息
 12  */ 
     public function valid()
     {
         $echoStr = $_GET["echostr"];

         //valid signature , option
         if($this->checkSignature()){
             echo $echoStr;
             exit;
         }
     }

 24 /**
 25  * 接收消息，并自动发送响应信息
 26  */ 
     public function responseMsg()
    {
        //get post data, May be due to the different environments
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

          //extract post data
          //提取post数据  
        if (!empty($postStr)){
                
                  $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;//发送人 
                $toUsername = $postObj->ToUserName;//接收人 
                $keyword = trim($postObj->Content);//消息内容 
                $time = time();//当前时间做为回复时间 

                $textTpl = "<xml>
                            <ToUserName><![CDATA[%s]]></ToUserName>
                            <FromUserName><![CDATA[%s]]></FromUserName>
                            <CreateTime>%s</CreateTime>
                            <MsgType><![CDATA[%s]]></MsgType>
                            <Content><![CDATA[%s]]></Content>
                            <FuncFlag>0</FuncFlag>
                            </xml>";             
                if(!empty( $keyword ))
                {
                      $msgType = "text";
                      // 天气预报
                      if (strlen($keyword)==6) {
                          if ($keyword=='天气') {
                              $contentStr = "PengchongLee的商城欢迎你！\n温馨小提示：\n输入【天气+城市】可获取实时天气!\n例如：天气北京";
                          }else{
                              $contentStr = "PengchongLee的商城欢迎你！\n温馨小提示：\n输入【天气+城市】可获取实时天气!\n例如：天气北京";
                          }                    
                    }elseif (strlen($keyword)>=12) {
                        $city = substr($keyword,6);
                        $weather = $this->getWeather($city);
                        if ($weather['success']==0) {
                            $contentStr = "PengchongLee的商城欢迎你！\n温馨小提示：\n输入【天气+城市】可获取实时天气!\n例如：天气北京";
                        }elseif($weather['success']==1){
                            $contentStr = "实时天气：\n城市：【".$weather['result']['citynm']."】;\n日期：【".
                            $weather['result']['days']."】;\n星期：【".$weather['result']['week']."】;\n温度：【".
                            $weather['result']['temperature']."】;\n天气：【".$weather['result']['weather']."】;";
                        }
                    }else{
                        $contentStr = "PengchongLee的商城欢迎你！\n温馨小提示：\n输入【天气+城市】可获取实时天气!\n例如：天气北京";
                    }
                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                    echo $resultStr;
                }else{
                    echo "Input something...";
                }

        }else {
            echo "";
            exit;
        }
    }

 66 /**
 67 * 检查签名，确保请求是从微信发过来的
 68 */  
     private function checkSignature()
     {
         $signature = $_GET["signature"];
         $timestamp = $_GET["timestamp"];
         $nonce = $_GET["nonce"];    

         $token = TOKEN;
         $tmpArr = array($token, $timestamp, $nonce);
         sort($tmpArr);
         $tmpStr = implode( $tmpArr );
         $tmpStr = sha1( $tmpStr );

         if( $tmpStr == $signature ){
             return true;
         }else{
             return false;
         }
     }

 88 /**
 89  * 自定义菜单
 90  */ 
     public function set_menu()
     {
         $access_token = $this->check_token();

         if ($access_token=='no') {

         }else{
             $url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=$access_token";

             $post_data = '
             {
                      "button":[
                         {
                             "type":"view",
                             "name":"首页",
                             "url":"http://www.lpcblog.com/weixin/shop/"
                         },
                         {
                             "name":"个人中心",
                             "sub_button":[
                             {
                                 "type":"view",
                                 "name":"个人信息",
                                 "url":"http://www.lpcblog.com/weixin/shop/user.html"
                             },
                             {
                                 "type":"view",
                                 "name":"个人账户",
                                 "url":"http://www.lpcblog.com/weixin/shop/myuser.html"
                             }]
                         },
                         {
                             "type":"click",
                             "name":"关于我们",
                             "key":"V1001_TODAY_MUSIC"
                         }
                         ]
             }';

             //设置菜单也是post传值
             return json_decode($this->curl($url,$post_data);
         }
     }

     //判断token值时效方法
     public function check_token()
     {
         if (file_exists('token.txt'))
         {
             //判断token值时效,修改时间
             $mtime=filemtime("token.txt");
             if((time()-$mtime)<7000){
                 return $this->read_access_token();
             }else{
                 $this->mem_token();
                     return $this->read_access_token();
             }
         }else{
             $this->mem_token();
             return $this->read_access_token();
         }
     }

     //curl封装类
     public function  curl($url,$data=array())
     {
         // 初始化curl
         $ch = curl_init();

         curl_setopt($ch, CURLOPT_URL, $url);
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

         // 开启支持https
         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
         // post数据
         curl_setopt($ch, CURLOPT_POST, 1);
         // post的变量
         curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

         $output = curl_exec($ch);
         // 关闭curl
         curl_close($ch);
         return $output;
     }

     //获取access_token方法
     public function get_token()
     {
         //加载常量文件(这里是定义的申请的appid等常量)
         include('define.php');
         //微信获取access_token地址
         $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".APPID."&secret=".APP_SECRET;

         //传值方式POST
         $post_data = array(
             'grant_type'=>'client_credential',
             'appid'=>APPID,
              'client_secret'=>APP_SECRET,
         );
         //curl方法模拟提交获取access_token(格式json)
         $access_token = json_decode($this->curl($url,$post_data);
         if($access_token['access_token']){
             return $access_token;
         }else{
             return "获取access_token失败";
         }
     }

     //读取access_token的方法
     public function read_access_token()
     {
         $token = unserialize(file_get_contents('token.txt'));
         return $token['access_token'];
     }

     //存token方法
     public function mem_token()
     {
         //调用获取access_token的方法
         $access_token = $this->get_token();
         //序列化返回的access_token
         $txt =  serialize($access_token);
         //保存access_token
         file_put_contents('token.txt',$txt);
     }
　　　　/** 
 * 获取天气
 */ 
    public function getWeather($city='')
    {
        //加载常量文件
        include('define.php');
        //实时天气接口
        $url = "http://api.k780.com/?app=weather.today&weaid=".$city."&appkey=".NOWAPI_APPKEY."&sign=".NOWAPI_SIGN."&format=json";
        $post_data = '';
        $weather = json_decode($this->curl($url),true);
        return $weather;
    }
 } 

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