自动回复微信消息

<?php  
  
$testObj =  new Wechat();  
  
if(!emptyempty($_GET[ ' echostr '])){  
      
    $testObj->valid();  
      
} else{  
      
    $testObj->responseMsg();  
}  
  
exit;  
  
class Wechat 
{  
     /* * 
     * 绑定url、token信息 
      */  
     public function valid(){  
        $echoStr = $_GET[ " echostr "];  
         if ($ this->checkSignature()) {  
            echo $echoStr;  
        }  
        exit();  
    }  
     /* * 
     * 检查签名，确保请求是从微信发过来的 
      */  
     private function checkSignature()  
    {  
        $signature = $_GET[ " signature "];  
        $timestamp = $_GET[ " timestamp "];  
        $nonce = $_GET[ " nonce "];      
                  
        $token =  " test123 "; // 与在微信配置的token一致，不可泄露  
        $tmpArr = array($token, $timestamp, $nonce);  
        sort($tmpArr);  
        $tmpStr = implode( $tmpArr );  
        $tmpStr = sha1( $tmpStr );  
          
         if( $tmpStr == $signature ){  
             return  true;  
        } else{  
             return  false;  
        }  
    }  
  
     /* * 
     * 接收消息，并自动发送响应信息 
      */  
     public function responseMsg(){  
          
         // 验证签名  
         if ($ this->checkSignature()){  
            $postStr = $GLOBALS[ " HTTP_RAW_POST_DATA "];  
            $ this->log_request_info();  
      
             // 提取post数据  
             if (!emptyempty($postStr)){  
                    $postObj = simplexml_load_string($postStr,  ' SimpleXMLElement ', LIBXML_NOCDATA);  
                    $fromUsername = $postObj->FromUserName; // 发送人  
                    $toUsername = $postObj->ToUserName; // 接收人  
                    $MsgType = $postObj->MsgType; // 消息类型  
                    $MsgId = $postObj->MsgId; // 消息id  
                    $time = time(); // 当前时间做为回复时间  
                      
                     // 如果是文本消息（表情属于文本信息）  
                     if($MsgType ==  ' text '){  
                        $content = trim($postObj->Content); // 消息内容  
                         if(!emptyempty( $content )){  
                              
                             // 如果文本内容是图文，则回复图文信息，否则回复文本信息  
                             if($content ==  " 图文 "){  
                                  
                                 // 回复图文消息,ArticleCount图文消息个数,多条图文消息信息，默认第一个item为大图  
                                $ArticleCount =  2;   
                                $newsTpl =  " <xml>  
                                <ToUserName><![CDATA[%s]]></ToUserName>  
                                <FromUserName><![CDATA[%s]]></FromUserName>  
                                <CreateTime>%s</CreateTime>  
                                <MsgType><![CDATA[%s]]></MsgType>  
                                <ArticleCount>%s</ArticleCount>  
                                <Articles>  
                                <item>  
                                <Title><![CDATA[%s]]></Title>   
                                <Description><![CDATA[%s]]></Description>  
                                <PicUrl><![CDATA[%s]]></PicUrl>  
                                <Url><![CDATA[%s]]></Url>  
                                </item>  
                                <item>  
                                <Title><![CDATA[%s]]></Title>  
                                <Description><![CDATA[%s]]></Description>  
                                <PicUrl><![CDATA[%s]]></PicUrl>  
                                <Url><![CDATA[%s]]></Url>  
                                </item>  
                                </Articles>  
                                </xml> " ;  
                                $resultStr = sprintf($newsTpl, $fromUsername, $toUsername, $time,  ' news ',   
                                            $ArticleCount, ' 我是图文信息 ', ' 我是描述信息 ', ' http://www.test.com/DocCenterService/image?photo_id=236 ',  
                                             ' http://www.test.com ', ' 爱城市网正式开通上线 ', ' 描述2 ', ' http://jn.test.com/ac/skins/img/upload/img/20131116/48171384568991509.png ',  
                                             ' http://www.test.com ');  
                                echo $resultStr;  
                                $ this->log($resultStr);  
                            } else{  
                                 // 回复文本信息  
                                $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> " ;               
                                $contentStr =  ' 你发送的信息是：接收人： '.$toUsername. ' ,发送人: '.$fromUsername. ' ,消息类型： '.$MsgType. ' ,消息内容： '.$content. '  www.icity365.com ';  
                                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,  ' text ', $contentStr);  
                                echo $resultStr;  
                                $ this->log($resultStr);  
                            }  
                        } else{  
                            echo  " Input something... ";  
                            $ this->log($resultStr);  
                        }  
                          
                       // 如果是图片消息  
                    }elseif ($MsgType ==  ' image '){  
                        $MediaId = $postObj->MediaId; // 图片消息媒体id，可以调用多媒体文件下载接口拉取数据。  
                        $imageTpl =  " <xml>  
                                    <ToUserName><![CDATA[%s]]></ToUserName>  
                                    <FromUserName><![CDATA[%s]]></FromUserName>  
                                    <CreateTime>%s</CreateTime>  
                                    <MsgType><![CDATA[%s]]></MsgType>  
                                    <Image>  
                                    <MediaId><![CDATA[%s]]></MediaId>  
                                    </Image>  
                                    </xml> " ;  
                        $resultStr = sprintf($imageTpl, $fromUsername, $toUsername, $time, $MsgType, $MediaId);  
                        echo $resultStr;  
                        $ this->log( " 自动响应图片信息 ");  
                        $ this->log($resultStr);  
                          
                     // 如果是视频  
                    } else  if($MsgType ==  ' video '){  
                        $MediaId = $postObj->MediaId; // 视频消息媒体id，可以调用多媒体文件下载接口拉取数据。  
                        $ThumbMediaId = $postObj->ThumbMediaId; // 视频消息缩略图的媒体id，可以调用多媒体文件下载接口拉取数据。   
                        $videoTpl =  " <xml>  
                                    <ToUserName><![CDATA[%s]]></ToUserName>  
                                    <FromUserName><![CDATA[%s]]></FromUserName>  
                                    <CreateTime>%s</CreateTime>  
                                    <MsgType><![CDATA[%s]]></MsgType>  
                                    <Video>  
                                    <MediaId><![CDATA[%s]]></MediaId>  
                                    <ThumbMediaId><![CDATA[%s]]></ThumbMediaId>  
                                    <Title><![CDATA[%s]]></Title>  
                                    <Description><![CDATA[%s]]></Description>  
                                    </Video>   
                                    </xml> " ;  
                        $resultStr = sprintf($videoTpl, $fromUsername, $toUsername, $time, $MsgType, $MediaId,$ThumbMediaId, ' 我是标题 ', ' 我是描述 ');  
                        echo $resultStr;  
                        $ this->log( " 自动响应视频信息 ".$ThumbMediaId);  
                        $ this->log($resultStr);  
                          
                     // 如果是地理位置  
                    } else  if($MsgType ==  ' location '){  
                        $Location_X = $postObj->Location_X; // 维度  
                        $Location_Y = $postObj->Location_Y; // 经度  
                        $Scale = $postObj->Scale; // 地图缩放大小  
                        $Label = $postObj->Label; // 地里位置信息  
                          
                         // 回复文本信息  
                        $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> " ;               
                        $msgType =  " text ";  
                        $contentStr =  ' 经度： '.$Location_Y. ' ，维度： '.$Location_X. ' ，地图缩放大小 '.$Scale. ' ，地理位置信息： '.$Label;  
                        $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);  
                        echo $resultStr;  
                        $ this->log($resultStr);  
                          
                     // 如果是事件  
                    } else  if($MsgType ==  ' event '){  
                          
                        $Event = $postObj->Event;  
                          
                         // subscribe(关注，也叫订阅)  
                         if($Event ==  ' subscribe '){  
                              
                            $EventKey = $postObj->EventKey; // 事件KEY值，qrscene_为前缀，后面为二维码的参数值  
                              
                             // 未关注时，扫描二维码  
                             if(!emptyempty($EventKey)){  
                                $Ticket = $postObj->Ticket; // 二维码的ticket，可用来换取二维码图片  
                                $ this->log($fromUsername. ' 扫描二维码关注！EventKey= '.$EventKey. ' ,Ticket= '.$Ticket);  
                            } else{  
                                $ this->log($fromUsername. ' 关注我了！ ');  
                            }  
                              
                         // unsubscribe(取消关注)  
                        }elseif ($Event ==  ' unsubscribe '){  
                            $ this->log($fromUsername. ' 取消关注我了！ ');  
                              
                         // 已关注时，扫描二维码事件  
                        }elseif($Event ==  ' SCAN ' || $Event ==  ' scan '){  
                            $EventKey = $postObj->EventKey; // 事件KEY值，是一个32位无符号整数，即创建二维码时的二维码scene_id  
                            $Ticket = $postObj->Ticket; // 二维码的ticket，可用来换取二维码图片  
                            $ this->log($fromUsername. ' 关注我了！EventKey= '.$EventKey. ' ,Ticket= '.$Ticket);  
                          
                         // 菜单点击事件  
                        }elseif($Event ==  ' CLICK '){  
                            $EventKey = $postObj->EventKey; // 事件KEY值，与自定义菜单接口中KEY值对应  
                             // 回复文本信息  
                            $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> " ;               
                            $contentStr =  ' 你点击了菜单，菜单项key= '.$EventKey;  
                            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,  ' text ', $contentStr);  
                            echo $resultStr;  
                            $ this->log($resultStr);  
  
                         // 其他事件类型  
                        } else{  
                            $ this->log( ' 事件类型： '.$Event);  
                        }  
                          
                     // 其他消息类型，链接、语音等  
                    } else{  
                         // 回复文本信息  
                        $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> " ;               
                        $contentStr =  ' 消息类型： '.$MsgType. ' 我们还没做处理。。。。【爱城市网】 ';  
                        $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,  ' text ', $contentStr);  
                        echo $resultStr;  
                        $ this->log($resultStr);  
                    }  
      
            } else {  
                echo  "";  
                exit;  
            }  
        } else{  
                $ this->log( " 验证签名未通过！ ");        
        }  
    }  
     /* * 
     * 记录请求信息 
      */  
    function log_request_info() {  
        $post =  '';  
         foreach($_POST    as   $key   =>   $value)   {   
            $post = $post.$key. '  :  '.$value. '  ,  ';   
        }   
        $ get =  '';  
         foreach($_GET    as   $key   =>   $value)   {   
            $ get = $ get.$key. '  :  '.$value. '  ,  ';   
        }   
        $ this->log( " get信息： ".$ get);  
        $ this->log( " post信息： ".$post);  
    }  
     /* * 
     * 记录日志 
     * @param $str 
     * @param $mode 
      */  
    function log($str){  
        $mode= ' a '; // 追加方式写  
        $file =  " log.txt ";  
        $oldmask = @umask( 0);  
        $fp = @fopen($file,$mode);  
        @flock($fp,  3);  
         if(!$fp)  
        {  
            Return  false;  
        }  
         else  
        {  
            @fwrite($fp,$str);  
            @fclose($fp);  
            @umask($oldmask);  
            Return  true;  
        }  
    }   
}  
  
?>