被动回复用户消息和关注事件推送

/**
 * @Author: itwo
 * @Date:   2016-07-18 11:04:35
 * @Last Modified by:   itwo
 * @Last Modified time: 2016-07-28 11:55:54
 */

// 接收用户信息
// 微信公众账号接收用户的消息类型判断

define("TOKEN", "weixin");

$wechatObj = new wechatCallbackapiTest();

if(isset($_GET["echostr"])){
    $wechatObj->valid();
}else{
    $wechatObj->responseMsg();
}

/**
 * 微信开发入口
 */
class wechatCallbackapiTest
{
    /**
     * 验证消息的确来自微信服务器
     * @return [bool] [ description ]
     * 转载：https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421135319&token=&lang=zh_CN
     */
    private function checkSignature()
    {
        $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){
            return true;
        }else{
            return false;
        }
    }

    public function valid()
    {
        $echoStr = $_GET["echostr"];
        if($this->checkSignature()){
            echo $echoStr;
            exit;
        }
    }

    public function responseMsg()
    {
       $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; // 理解-> http://www.cnblogs.com/xwblog/archive/2011/12/23/2299672.html
       if(!empty($postStr)){
        $postStr = simplexml_load_string($postStr, ‘SimpleXMLElement‘, LIBXML_NOCDATA);
        $RX_TYPE = trim($postStr->MsgType);
        //用户发送的消息类型判断
        switch ($RX_TYPE) {
            case ‘text‘: // 文本消息
                $result = $this->receiveText($postStr);
                break;
            case ‘image‘:
                $result = $this->receiveImage($postStr);
                break;
            case ‘voice‘:
                $result = $this->receiveVoice($postStr);
                break;
            case ‘video‘:
                $result = $this->receiveVideo($postStr);
                break;
            case ‘shortvideo‘:
                $result = $this->receiveVideo($postStr);
                break;
            case ‘location‘:
                $result = $this->receiveLocation($postStr);
                break;
            case ‘link‘:
                $result = $this->receiveLink($postStr);
                break;
            case ‘event‘:
                $result = $this->receiveEvent($postStr);
                break;
            default:
                $result = $this->receiveMsgType($postStr);
                break;
        }
        echo $result;
       }else{
            echo "";
            exit;
       }
    }

    /**
     * 接收用户发送各种消息类型，提取用户发送的消息特征值，然后反馈给开发者
     */

    private function receiveText($object)
    {

        $content = " 你发送的是文本，内容为： ".$object->Content;
        $result = $this->transmitText($object, $content);

        $keyword = trim($object->Content);
        if ($keyword == "文本") {
            $content = " 你发送的是文本，内容为： ".$object->FromUserName;
            $result = $this->transmitText($object, $content);
        }
        else if($keyword == "图文" || $keyword == "单图文"){
            //回复单图文消息
            $content = array();
            $content[] = array("Title"=>"单图文标题", "Description"=>"单图文简述", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url"=>"http://m.cnblogs.com/?u=txw1958");
            $result = $this->transmitNews($object, $content);
        }
        else if($keyword == "多图文"){
            //回复单图文消息
            $content = array();
            $content[] = array("Title"=>"图文标题1", "Description"=>"图文简述1", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url"=>"http://m.cnblogs.com/?u=txw1958");
            $content[] = array("Title"=>"图文标题2", "Description"=>"图文简述2", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url"=>"http://m.cnblogs.com/?u=txw1958");
            $content[] = array("Title"=>"图文标题3", "Description"=>"图文简述3", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg", "Url"=>"http://m.cnblogs.com/?u=txw1958");
            $result = $this->transmitNews($object, $content);
        }
        else if ($keyword == "音乐") {
            $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");
            $result = $this->transmitMusic($object, $content);
        }
        return $result;
    }
    private function receiveImage($object)
    {
        $content = array("MediaId"=>$object->MediaId);
        $result = $this->transmitImage($object, $content);
        return $result;
    }
    private function receiveVoice($object)
    {
        $content = array("MediaId"=>$object->MediaId);
        $result = $this->transmitVoice($object, $content);
        return $result;
    }
    private function receiveVideo($object)
    {
        $content = array("MediaId"=>$object->MediaId, "ThumbMediaId"=>$object->ThumbMediaId, "Title"=>"", "Description"=>"");
        $result = $this->transmitVideo($object, $content);
        return $result;
    }
    private function receiveLocation($object)
    {
        $content = "你发送的是位置，纬度为：".$object->Location_X."；经度为：".$object->Location_Y."；缩放级别为：".$object->Scale."；位置为：".$object->Label;
        $result = $this->transmitText($object, $content);
        return $result;
    }
    private function receiveLink($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 $result;
    }
    private function receiveEvent($object)
    {
        $content = "";
        switch ($object->Event) {
            case ‘subscribe‘:
                $content = "欢迎关注itwo123，科学上网";
                break;
            case ‘unsubscribe‘:
                $content = "";
                break;
            default:
                $content = "";
                break;
        }
        $result = $this->transmitText($object, $content);
        return $result;
    }

    private function receiveMsgType($object)
    {
        $content = "抱歉，系统故障。"."\n故障代码：".$object->MsgType;
        $result = $this->transmitText($object, $content);
        return $result;
    }
    /**
     * 文本形式回复用户发送的消息
     */

    private function transmitText($object, $content)
    {
        $textTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime><![CDATA[%s]]></CreateTime>
        <MsgType><![CDATA[text]]></MsgType>
        <Content><![CDATA[%s]]></Content>
        </xml>
        ";
        $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);
        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‘]);

        $textTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime><![CDATA[%s]]></CreateTime>
        <MsgType><![CDATA[image]]></MsgType>
        $item_str
        </xml>";
         $result = sprintf($textTpl, $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‘]);

        $textTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime><![CDATA[%s]]></CreateTime>
        <MsgType><![CDATA[voice]]></MsgType>
        $item_str
        </xml>";

         $result = sprintf($textTpl, $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‘]);

        $textTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime><![CDATA[%s]]></CreateTime>
        <MsgType><![CDATA[video]]></MsgType>
        $item_str
        </xml>";
         $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time());
         return $result;
    }
    /**
     * 回复图文信息
     */
    private function transmitNews($object, $arr_item)
    {
        if(!is_array($arr_item)){
            return;
        }
        $itemTpl = "<item>
        <Title><![CDATA[%s]]></Title>
        <Description><![CDATA[%s]]></Description>
        <PicUrl><![CDATA[%s]]></PicUrl>
        <Url><![CDATA[%s]]></Url>
        </item>";

        $item_str = "";

        foreach ($arr_item as $item) {
            $item_str .= sprintf($itemTpl, $item[‘Title‘], $item[‘Description‘], $item[‘PicUrl‘], $item[‘Url‘]);
        }

        $newsTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime>%s</CreateTime>
        <MsgType><![CDATA[news]]></MsgType>
        <Content><![CDATA[]]></Content>
        <ArticleCount>%s</ArticleCount>
        <Articles>
           $item_str
        </Articles>
        </xml>";

        $result = sprintf($newsTpl, $object->FromUserName, $object->ToUserName, time(), count($arr_item));

        return $result;
    }
    /**
     * 回复音乐消息
     */
    private function transmitMusic($object, $musicArray)
    {


        $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‘]);

        $textTpl = "<xml>
        <ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
        <CreateTime>%s</CreateTime>
        <MsgType><![CDATA[music]]></MsgType>
        $item_str
        </xml>";

        $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time());

        return $result;
    }
}

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