微信公众号与消息回复

接上一篇微信授权登录以及个人信息获取

  • 首先是微信的原理/流程
    每当关注,发送信息的时候都会调用接口,并发送相对应事件.
    eg.
微信公众号与消息回复_第1张图片
字段对照图
  • 上代码看看
微信公众号与消息回复_第2张图片
代码图

1.注释部分
依次调用了验证,定义菜单,回调响应事件.
好处在于都调用到了...写的方便
2.未注释部分
首先判断echostr,这个字段只有在接口测试的时候才有。

总体流程

首先在接入接口地址
然后在每次该公众号发生事件的时候都会传数据到该接口
通过获取MsgType来判断该事件的类型,图片,文字,等等


下面别看了...

   //响应消息
    public function responseMsg()
    {
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

        if (!empty($postStr)) {
            //如果post参数不为空的话
            $this->logger("R \r\n" . $postStr);
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $RX_TYPE = trim($postObj->MsgType);

            if (($postObj->MsgType == "event") && ($postObj->Event == "subscribe" || $postObj->Event == "unsubscribe")) {
                //过滤关注和取消关注事件
                $result = $this->receiveText($postObj);
            } else {

            }

            //消息类型分离
            switch ($RX_TYPE) {
                case "event":
                    $result = $this->receiveEvent($postObj);
                    break;
                case "text":
                    if (strstr($postObj->Content, "第三方")) {
                        $result = $this->relayPart3("http://www.fangbei.org/test.php" . '?' . $_SERVER['QUERY_STRING'], $postStr);
                    } else {
                        $result = $this->receiveText($postObj);
                    }
                    break;
                case "image":
                    $result = $this->receiveImage($postObj);
                    break;
                case "location":
                    $result = $this->receiveLocation($postObj);
                    break;
                case "voice":
                    $result = $this->receiveVoice($postObj);
                    break;
                case "video":
                    $result = $this->receiveVideo($postObj);
                    break;
                case "link":
                    $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 ";
//                $content .= (!empty($object->EventKey)) ? ("\n来自二维码场景 " . str_replace("qrscene_", "", $object->EventKey)) : "";
                foreach ($object as $key => $value) {
                    $content .= ' key = ' . $key . ' => value ' . $value . ' ###';
                }
                break;
            case "unsubscribe":
                $content = "取消关注";
                break;
            case "CLICK":
                switch ($object->EventKey) {
                    case "COMPANY":
                        $content = array();
                        $content[] = array("Title" => "方倍工作室", "Description" => "", "PicUrl" => "http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url" => "http://m.cnblogs.com/?u=txw1958");
                        break;
                    default:
                        $content = "点击菜单:" . $object->EventKey;
                        break;
                }
                break;
            case "VIEW":
                $content = "跳转链接 " . $object->EventKey;
                break;
            case "SCAN":
                $content = "扫描场景 " . $object->EventKey;
                break;
            case "LOCATION":
                $content = "上传位置:纬度 " . $object->Latitude . ";经度 " . $object->Longitude;
                break;
            case "scancode_waitmsg":
                if ($object->ScanCodeInfo->ScanType == "qrcode") {
                    $content = "扫码带提示:类型 二维码 结果:" . $object->ScanCodeInfo->ScanResult;
                } else if ($object->ScanCodeInfo->ScanType == "barcode") {
                    $codeinfo = explode(",", strval($object->ScanCodeInfo->ScanResult));
                    $codeValue = $codeinfo[1];
                    $content = "扫码带提示:类型 条形码 结果:" . $codeValue;
                } else {
                    $content = "扫码带提示:类型 " . $object->ScanCodeInfo->ScanType . " 结果:" . $object->ScanCodeInfo->ScanResult;
                }
                break;
            case "scancode_push":
                $content = "扫码推事件";
                break;
            case "pic_sysphoto":
                $content = "系统拍照";
                break;
            case "pic_weixin":
                $content = "相册发图:数量 " . $object->SendPicsInfo->Count;
                break;
            case "pic_photo_or_album":
                $content = "拍照或者相册:数量 " . $object->SendPicsInfo->Count;
                break;
            case "location_select":
                $content = "发送位置:标签 " . $object->SendLocationInfo->Label;
                break;
            default:
                $content = "receive a new event: " . $object->Event;
                break;
        }

        if (is_array($content)) {
            if (isset($content[0]['PicUrl'])) {
                $result = $this->transmitNews($object, $content);
            } else if (isset($content['MusicUrl'])) {
                $result = $this->transmitMusic($object, $content);
            }
        } else {
            $result = $this->transmitText($object, $content);
        }
        return $result;
    }

    //接收文本消息
    private function receiveText($object)
    {
        $keyword = trim($object->Content);
        //多客服人工回复模式
        if (strstr($keyword, "请问在吗") || strstr($keyword, "在线客服")) {
            $result = $this->transmitService($object);
            return $result;
        }

        //自动回复模式
        if (strstr($keyword, "文本")) {
            $content = "这是个文本消息";
        } else if (strstr($keyword, "表情")) {
            $content = "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")) {
            $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")) {
            $content = array();
            $content = array("Title" => "最炫民族风", "Description" => "歌手:凤凰传奇", "MusicUrl" => "http://121.199.4.61/music/zxmzf.mp3", "HQMusicUrl" => "http://121.199.4.61/music/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";
            $content = '';
            foreach ($object as $key => $item) {
                $content .= 'key = ' . $key . ' == value = ' . $item . '         ';
            }
        }

        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 = "
    
    
    %s
    
    
";
        $result = sprintf($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 = "        
            <![CDATA[%s]]>
            
            
            
        
";
        $item_str = "";
        foreach ($newsArray as $item) {
            $item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);
        }
        $xmlTpl = "
    
    
    %s
    
    %s
    
$item_str    
";

        $result = sprintf($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 = "
        <![CDATA[%s]]>
        
        
        
    ";

        $item_str = sprintf($itemTpl, $musicArray['Title'], $musicArray['Description'], $musicArray['MusicUrl'], $musicArray['HQMusicUrl']);

        $xmlTpl = "
    
    
    %s
    
    $item_str
";

        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
        return $result;
    }

    //回复图片消息
    private function transmitImage($object, $imageArray)
    {
        $itemTpl = "
        
    ";

        $item_str = sprintf($itemTpl, $imageArray['MediaId']);

        $xmlTpl = "
    
    
    %s
    
    $item_str
";

        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
        return $result;
    }

    //回复语音消息
    private function transmitVoice($object, $voiceArray)
    {
        $itemTpl = "
        
    ";

        $item_str = sprintf($itemTpl, $voiceArray['MediaId']);
        $xmlTpl = "
    
    
    %s
    
    $item_str
";

        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
        return $result;
    }

    //回复视频消息
    private function transmitVideo($object, $videoArray)
    {
        $itemTpl = "";

        $item_str = sprintf($itemTpl, $videoArray['MediaId'], $videoArray['ThumbMediaId'], $videoArray['Title'], $videoArray['Description']);

        $xmlTpl = "
    
    
    %s
    
    $item_str
";

        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
        return $result;
    }

    //回复多客服消息
    private function transmitService($object)
    {
        $xmlTpl = "
    
    
    %s
    
";
        $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
        return $result;
    }

    //回复第三方接口消息
    private function relayPart3($url, $rawData)
    {
        $headers = array("Content-Type: text/xml; charset=utf-8");
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $rawData);
        $output = curl_exec($ch);
        curl_close($ch);
        return $output;
    }

    //字节转Emoji表情
    function bytes_to_emoji($cp)
    {
        if ($cp > 0x10000) {       # 4 bytes
            return chr(0xF0 | (($cp & 0x1C0000) >> 18)) . chr(0x80 | (($cp & 0x3F000) >> 12)) . chr(0x80 | (($cp & 0xFC0) >> 6)) . chr(0x80 | ($cp & 0x3F));
        } else if ($cp > 0x800) {   # 3 bytes
            return chr(0xE0 | (($cp & 0xF000) >> 12)) . chr(0x80 | (($cp & 0xFC0) >> 6)) . chr(0x80 | ($cp & 0x3F));
        } else if ($cp > 0x80) {    # 2 bytes
            return chr(0xC0 | (($cp & 0x7C0) >> 6)) . chr(0x80 | ($cp & 0x3F));
        } else {                    # 1 byte
            return chr($cp);
        }
    }

    //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);
        }
    }

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