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;  
        }  
    }   
}  
  
?>