夺命雷公狗—微信开发40—-微信语言识别接口2（点歌系统）

<?php
/**
  * wechat php test
  */

//define your token
require_once "common.php";
//这里是引入curl发送函数的类
require_once ‘WeChat.class.php‘;
define("TOKEN", "twgdh");

//这里让这个类继承了curl发送参数的类
class wechatCallbackapiTest extends WeChat
{
    public function valid()
    {
        $echoStr = $_GET["echostr"];

        //valid signature , option
        if($this->checkSignature()){
            echo $echoStr;
            exit;
        }
    }

    public function responseMsg()
    {
        //get post data, May be due to the different environments
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        
          //extract post data
        if (!empty($postStr)){
                /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,
                   the best way is to check the validity of xml by yourself */
                // 使用simplexml技术对xml进行解析 
                // libxml_disable_entity_loader(true), 是从安全性考虑，为了防止xml外部注入，
                //只对xml内部实体内容进行解析
                libxml_disable_entity_loader(true);
                //加载 postStr 字符串
                $postObj = simplexml_load_string($postStr, ‘SimpleXMLElement‘, LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $keyword = trim($postObj->Content);
                $time = time();
                global $tmp_arr;
                //根据接收到的消息类型，来进行分支处理(switch)
                switch($postObj->MsgType)
                {
case ‘event‘:
    if($postObj->Event == ‘subscribe‘)
    {
        
        $contentStr = "欢迎关注leigood微信测试号噢";
        $resultStr = sprintf($tmp_arr[‘text‘], $fromUsername, $toUsername, $time, $contentStr);
        echo $resultStr; 
    }
    
    //响应用户的点击事件
    if($postObj->Event == ‘CLICK‘){
        if($postObj->EventKey == ‘V1001_TODAY_MUSIC‘){ //自定义菜单里面有很多个，这里key是自定义的
            //这里主要写自己想要的业务逻辑
            $contentStr = "夺命雷公狗欢迎您来到编程世界";
            $resultStr = sprintf($tmp_arr[‘text‘], $fromUsername, $toUsername, $time, $contentStr);
            echo $resultStr; 
        }
    }
    
    break;
case ‘text‘: //回复文本模块
    //这里开始测试客服消息接口了
    if($keyword == ‘文本‘){
       //获取token
       require ‘get_token.php‘;
       $contentStr = ‘这是客服接口的回复，我们可以帮助您什么？‘;
       //对发送的内容进行urlencode编码，防止中文乱码
       $contentStr = urlencode($contentStr);
       //到时候我们我发送的内容我们放到一个数组里面去了
       $content_arr = array(‘content‘=>"{$contentStr}");
       //这里的意思是将来我要发送消息给这个用户
       $reply_arr = array(‘touser‘=>"{$fromUsername}",‘msgtype‘=>‘text‘,‘text‘=>$content_arr);
       //下一步就是将编码转成规定的json格式
       $post = json_encode($reply_arr);
       //url解码，如果不解码他将会发来一段二进制代码
       $post = urldecode($post);
       $url = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token={$access_token}";
       //这里我们来使用类的继承机制，来简化代码
       $this -> http_request($url,$post);
       //这里是可以回复多条消息的，只需要在执行下这个函数即可
       //$this -> http_request($url,$post);
       
    }else{
        $contentStr = ‘您输入的格式有误‘;
        $resultStr = sprintf($tmp_arr[‘text‘], $fromUsername, $toUsername, $time, $contentStr);
        echo $resultStr;
    }
    break;

case ‘voice‘;
    //简单的微信语音点歌系统
    //暂时我们的歌曲还没放入数据库里面，如果在数据库里面，如果已入库$postObj->Recognition在数据库查
    //这后面的!号一定要加，否则查询失败
    if($postObj->Recognition ==‘十八摸！‘){
        $title = ‘十八摸‘; //标题
        $Description = ‘十八摸，您懂得~~~~~‘; //音乐描述
        $MusicUrl = "http://weixin.showtp.com/music/qbm.mp3"; //音乐链接
        $HQMusicUrl = "http://weixin.showtp.com/music/sbm.mp3"; //高质量音乐链接
        
        $resultStr = sprintf($tmp_arr[‘music‘], $fromUsername, $toUsername, $time, $title,$Description,$MusicUrl,$HQMusicUrl);
        echo $resultStr;
        
    }else if($postObj->Recognition ==‘强暴神曲！‘){
        $title = ‘强暴神曲！‘; //标题
        $Description = ‘强暴的艺术歌曲，您懂得~~~~~‘; //音乐描述
        $MusicUrl = "http://weixin.showtp.com/music/qbsq.mp3"; //音乐链接
        $HQMusicUrl = "http://weixin.showtp.com/music/qbsq.mp3"; //高质量音乐链接
        
        $resultStr = sprintf($tmp_arr[‘music‘], $fromUsername, $toUsername, $time, $title,$Description,$MusicUrl,$HQMusicUrl);
        echo $resultStr;
        
    }else if($postObj->Recognition ==‘喜欢你！‘){
        $title = ‘喜欢你！‘; //标题
        $Description = ‘喜欢你，您懂得~~~~~‘; //音乐描述
        $MusicUrl = "http://weixin.showtp.com/music/xhn.mp3"; //音乐链接
        $HQMusicUrl = "http://weixin.showtp.com/music/xhn.mp3"; //高质量音乐链接
        
        $resultStr = sprintf($tmp_arr[‘music‘], $fromUsername, $toUsername, $time, $title,$Description,$MusicUrl,$HQMusicUrl);
        echo $resultStr;
        
    }else{
        $contentStr = ‘抱歉您所点的歌曲在leigood数据库里面没有找到‘;
        $resultStr = sprintf($tmp_arr[‘text‘], $fromUsername, $toUsername, $time, $contentStr);
        echo $resultStr;
    }
break;
                }
        }else {
            echo "";
            exit;
        }
    }
        
    private function checkSignature()
    {
        // you must define TOKEN by yourself
        if (!defined("TOKEN")) {
            throw new Exception(‘TOKEN is not defined!‘);
        }
        
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];
                
        $token = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        // use SORT_STRING rule
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );
        
        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }
}

//如果这段代码放在上面，那程序将会报错，因为继承的问题，会显示类没有找到
$wechatObj = new wechatCallbackapiTest();
//当接入成功后，请注销这句话，否则，会反复验证。
//$wechatObj->valid();
//添加响应请求的语句
$wechatObj->responseMsg();

?>