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();

?>