<?php
  /*
      方倍工作室 http://www.fangbei.org/
      CopyRight 2016 All Rights Reserved
  */
  header(‘Content-type:text‘);
  
  define("TOKEN", "weixin");
  $wechatObj = new wechatCallbackapiTest();
  if (!isset($_GET[‘echostr‘])) {
      $wechatObj->responseMsg();
  }else{
      $wechatObj->valid();
  }
  
  class wechatCallbackapiTest
  {
      //验证签名
      public function valid()
      {
          $echoStr = $_GET["echostr"];
          $signature = $_GET["signature"];
          $timestamp = $_GET["timestamp"];
          $nonce = $_GET["nonce"];
          $token = TOKEN;
          $tmpArr = array($token, $timestamp, $nonce);
          sort($tmpArr, SORT_STRING);
          $tmpStr = implode($tmpArr);
          $tmpStr = sha1($tmpStr);
          if($tmpStr == $signature){
              echo $echoStr;
              exit;
          }
      }
  
      //响应消息
      public function responseMsg()
      {
          $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
          if (!empty($postStr)){
              $this->logger("R \r\n".$postStr);
              $postObj = simplexml_load_string($postStr, ‘SimpleXMLElement‘, LIBXML_NOCDATA);
              $RX_TYPE = trim($postObj->MsgType);
              
              //消息类型分离
              switch ($RX_TYPE)
              {
                  case "event":        //事件
                      $result = $this->receiveEvent($postObj);
                      break;
                  case "text":        //文本
                      $result = $this->receiveText($postObj);
                      break;
                  case "image":        //图片
                      $result = $this->receiveImage($postObj);
                      break;
                  case "location":    //位置
                      $result = $this->receiveLocation($postObj);
                      break;
                  case "voice":        //语音
                      $result = $this->receiveVoice($postObj);
                      break;
                  case "video":        //视频
                 case "shortvideo":
                     $result = $this->receiveVideo($postObj);
                     break;
                 case "link":        //链接
                     $result = $this->receiveLink($postObj);
                     break;
                 default:
                     $result = "unknown msg type: ".$RX_TYPE;
                     break;
             }
             $this->logger("T \r\n".$result);
             echo $result;
         }else {
             echo "";
             exit;
         }
     }
 
     //接收事件消息
     private function receiveEvent($object)
     {
         $content = "";
         switch ($object->Event)
         {
             case "subscribe":
                 $content = "欢迎关注方倍工作室 \n请回复以下关键字：文本 表情 单图文 多图文 音乐\n请按住说话 或 点击 + 再分别发送以下内容：语音 图片 小视频 我的收藏 位置";
                 break;
             case "unsubscribe":
                 $content = "取消关注";
                 break;
             default:
                 $content = "receive a new event: ".$object->Event;
                 break;
         }
 
         if(is_array($content)){
             $result = $this->transmitNews($object, $content);
         }else{
             $result = $this->transmitText($object, $content);
         }
         return $result;
     }
 
     //接收文本消息
     private function receiveText($object)
     {
         $keyword = trim($object->Content);
 
         if (strstr($keyword, "文本")){            //回复文本
             $content = "这是个文本消息";
         }else if (strstr($keyword, "表情")){
             $content = "微笑：/::)\n乒乓：/:oo\n中国：".$this->bytes_to_emoji(0x1F1E8).$this->bytes_to_emoji(0x1F1F3)."\n仙人掌：".$this->bytes_to_emoji(0x1F335);
         }else if (strstr($keyword, "单图文")){    //回复图文消息
             $content = array();
             $content[] = array("Title"=>"单图文标题",  "Description"=>"单图文内容", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
         }else if (strstr($keyword, "图文") || strstr($keyword, "多图文")){
             $content = array();
             $content[] = array("Title"=>"多图文1标题", "Description"=>"", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
             $content[] = array("Title"=>"多图文2标题", "Description"=>"", "PicUrl"=>"http://d.hiphotos.bdimg.com/wisegame/pic/item/f3529822720e0cf3ac9f1ada0846f21fbe09aaa3.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
             $content[] = array("Title"=>"多图文3标题", "Description"=>"", "PicUrl"=>"http://g.hiphotos.bdimg.com/wisegame/pic/item/18cb0a46f21fbe090d338acc6a600c338644adfd.jpg", "Url" =>"http://m.cnblogs.com/?u=txw1958");
         }else if (strstr($keyword, "音乐")){    //回复音乐消息
             $content = array();
             $content = array("Title"=>"最炫民族风", "Description"=>"歌手：凤凰传奇", "MusicUrl"=>"http://mascot-music.stor.sinaapp.com/zxmzf.mp3", "HQMusicUrl"=>"http://mascot-music.stor.sinaapp.com/zxmzf.mp3"); 
         }else{
             $content = date("Y-m-d H:i:s",time())."\nOpenID：".$object->FromUserName."\n技术支持 方倍工作室";
         }
 
         if(is_array($content)){
             if (isset($content[0])){
                 $result = $this->transmitNews($object, $content);
             }else if (isset($content[‘MusicUrl‘])){
                 $result = $this->transmitMusic($object, $content);
             }
         }else{
             $result = $this->transmitText($object, $content);
         }
         return $result;
     }
 
     //接收图片消息
     private function receiveImage($object)
     {
         $content = array("MediaId"=>$object->MediaId);
         $result = $this->transmitImage($object, $content);
         return $result;
     }
 
     //接收位置消息
     private function receiveLocation($object)
     {
         $content = "你发送的是位置，经度为：".$object->Location_Y."；纬度为：".$object->Location_X."；缩放级别为：".$object->Scale."；位置为：".$object->Label;
         $result = $this->transmitText($object, $content);
         return $result;
     }
 
     //接收语音消息
     private function receiveVoice($object)
     {
         if (isset($object->Recognition) && !empty($object->Recognition)){
             $content = "你刚才说的是：".$object->Recognition;
             $result = $this->transmitText($object, $content);
         }else{
             $content = array("MediaId"=>$object->MediaId);
             $result = $this->transmitVoice($object, $content);
         }
         return $result;
     }
 
     //接收视频消息
     private function receiveVideo($object)
     {
         $content = array("MediaId"=>$object->MediaId, "ThumbMediaId"=>$object->ThumbMediaId, "Title"=>"", "Description"=>"");
         $result = $this->transmitVideo($object, $content);
         return $result;
     }
 
     //接收链接消息
     private function receiveLink($object)
     {
         $content = "你发送的是链接，标题为：".$object->Title."；内容为：".$object->Description."；链接地址为：".$object->Url;
         $result = $this->transmitText($object, $content);
         return $result;
     }
     
     //回复文本消息
     private function transmitText($object, $content)
     {
         if (!isset($content) || empty($content)){
             return "";
         }
 
         $xmlTpl = "<xml>
     <ToUserName><![CDATA[%s]]></ToUserName>
     <FromUserName><![CDATA[%s]]></FromUserName>
     <CreateTime>%s</CreateTime>
     <MsgType><![CDATA[text]]></MsgType>
     <Content><![CDATA[%s]]></Content>
 </xml>";
         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), $content);
 
         return $result;
     }
 
     //回复图文消息
     private function transmitNews($object, $newsArray)
     {
         if(!is_array($newsArray)){
             return "";
         }
         $itemTpl = "        <item>
             <Title><![CDATA[%s]]></Title>
             <Description><![CDATA[%s]]></Description>
             <PicUrl><![CDATA[%s]]></PicUrl>
             <Url><![CDATA[%s]]></Url>
         </item>
 ";
         $item_str = "";
         foreach ($newsArray as $item){
             $item_str .= sprintf($itemTpl, $item[‘Title‘], $item[‘Description‘], $item[‘PicUrl‘], $item[‘Url‘]);
         }
         $xmlTpl = "<xml>
     <ToUserName><![CDATA[%s]]></ToUserName>
     <FromUserName><![CDATA[%s]]></FromUserName>
     <CreateTime>%s</CreateTime>
     <MsgType><![CDATA[news]]></MsgType>
     <ArticleCount>%s</ArticleCount>
     <Articles>
 $item_str    </Articles>
 </xml>";
 
         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));
         return $result;
     }
 
     //回复音乐消息
     private function transmitMusic($object, $musicArray)
     {
         if(!is_array($musicArray)){
             return "";
         }
         $itemTpl = "<Music>
         <Title><![CDATA[%s]]></Title>
         <Description><![CDATA[%s]]></Description>
         <MusicUrl><![CDATA[%s]]></MusicUrl>
         <HQMusicUrl><![CDATA[%s]]></HQMusicUrl>
     </Music>";
 
         $item_str = sprintf($itemTpl, $musicArray[‘Title‘], $musicArray[‘Description‘], $musicArray[‘MusicUrl‘], $musicArray[‘HQMusicUrl‘]);
 
         $xmlTpl = "<xml>
     <ToUserName><![CDATA[%s]]></ToUserName>
     <FromUserName><![CDATA[%s]]></FromUserName>
     <CreateTime>%s</CreateTime>
     <MsgType><![CDATA[music]]></MsgType>
     $item_str
 </xml>";
 
         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
         return $result;
     }
 
     //回复图片消息
     private function transmitImage($object, $imageArray)
     {
         $itemTpl = "<Image>
         <MediaId><![CDATA[%s]]></MediaId>
     </Image>";
 
         $item_str = sprintf($itemTpl, $imageArray[‘MediaId‘]);
 
         $xmlTpl = "<xml>
     <ToUserName><![CDATA[%s]]></ToUserName>
     <FromUserName><![CDATA[%s]]></FromUserName>
     <CreateTime>%s</CreateTime>
     <MsgType><![CDATA[image]]></MsgType>
     $item_str
 </xml>";
 
         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
         return $result;
     }
 
     //回复语音消息
     private function transmitVoice($object, $voiceArray)
     {
         $itemTpl = "<Voice>
         <MediaId><![CDATA[%s]]></MediaId>
     </Voice>";
 
         $item_str = sprintf($itemTpl, $voiceArray[‘MediaId‘]);
         $xmlTpl = "<xml>
     <ToUserName><![CDATA[%s]]></ToUserName>
     <FromUserName><![CDATA[%s]]></FromUserName>
     <CreateTime>%s</CreateTime>
     <MsgType><![CDATA[voice]]></MsgType>
     $item_str
 </xml>";
 
         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
         return $result;
     }
 
     //回复视频消息
     private function transmitVideo($object, $videoArray)
     {
         $itemTpl = "<Video>
         <MediaId><![CDATA[%s]]></MediaId>
         <ThumbMediaId><![CDATA[%s]]></ThumbMediaId>
         <Title><![CDATA[%s]]></Title>
         <Description><![CDATA[%s]]></Description>
     </Video>";
 
         $item_str = sprintf($itemTpl, $videoArray[‘MediaId‘], $videoArray[‘ThumbMediaId‘], $videoArray[‘Title‘], $videoArray[‘Description‘]);
 
         $xmlTpl = "<xml>
     <ToUserName><![CDATA[%s]]></ToUserName>
     <FromUserName><![CDATA[%s]]></FromUserName>
     <CreateTime>%s</CreateTime>
     <MsgType><![CDATA[video]]></MsgType>
     $item_str
 </xml>";
 
         $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
         return $result;
     }
 
     //日志记录
     private function logger($log_content)
     {
         if(isset($_SERVER[‘HTTP_APPNAME‘])){   //SAE
             sae_set_display_errors(false);
             sae_debug($log_content);
             sae_set_display_errors(true);
         }else if($_SERVER[‘REMOTE_ADDR‘] != "127.0.0.1"){ //LOCAL
             $max_size = 1000000;
             $log_filename = "log.xml";
             if(file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)){unlink($log_filename);}
             file_put_contents($log_filename, date(‘Y-m-d H:i:s‘)." ".$log_content."\r\n", FILE_APPEND);
         }
     }
 }
 ?>