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【PHP】 PHP在微信公共平台实现24点游戏
作者:汪海洋 / 发布于2013/9/2/ 586

	<?php

	//define your token
	define("TOKEN", "ddwm");
	define("INPUT_NAME", "1");
	define("START_GAME", "2");
	define("TIMING_START", "3");
	define("TIMING_END", "4");


	$wechatObj = new Why24Point();

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

	class Why24Point {

	 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)) {
	 $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
	 $fromUsername = $postObj->FromUserName;
	 $toUsername = $postObj->ToUserName;
	 if($postObj->Event == "subscribe"){
	 $time = time();
	 $textTpl = " <xml>
	 <ToUserName><![CDATA[%s]]></ToUserName>
	 <FromUserName><![CDATA[%s]]></FromUserName>
	 <CreateTime>%s</CreateTime>
	 <MsgType><![CDATA[%s]]></MsgType>
	 <Content><![CDATA[%s]]></Content>
	 </xml>";
	 $msgType = "text";
	 $contentStr = "哟你好亲爱的小伙伴，欢迎来到24点~\n游戏规则：使用+-*/四则运算得出结果为24即可。\n任何时候输入 主页 返回主菜单，\n输入 排名 查看当前排名哟~\n如果有情况反馈请发送语音信息！\n请输入任意内容，开始我们的24点职业生涯！";
	 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
	 echo $resultStr;
	 }
	 $keyword = trim($postObj->Content);
	 $time = time();
	 $textTpl = " <xml>
	 <ToUserName><![CDATA[%s]]></ToUserName>
	 <FromUserName><![CDATA[%s]]></FromUserName>
	 <CreateTime>%s</CreateTime>
	 <MsgType><![CDATA[%s]]></MsgType>
	 <Content><![CDATA[%s]]></Content>
	 </xml>";
	 if (!empty($keyword)) {
	 $msgType = "text";
	 $contentStr = $this->getData($fromUsername, $keyword);
	 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
	 echo $resultStr;
	 } else {
	 echo "输入点东西吧。。";
	 }
	 } else {
	 echo "";
	 exit;
	 }
	 }

	 private function getData($fromUsername, $keyword) {
	 if($keyword == "主页"){
	 $this->setStep($fromUsername, constant("START_GAME"));
	 return "欢迎来到24点的决战现场。请输入任意内容，开始我们的24点职业生涯！任何时候输入 主页 返回主菜单，输入 排名 查看当前排名~";
	 }

	 if($keyword == "排名"){
	 return "您的目前排名是：".$this->getRank($fromUsername);
	 }

	
	 if ($this->isFirst($fromUsername)) {
	 return "这是你第一次参加游戏，请输入你的用户昵称：";
	 }

	 if ($this->getStep($fromUsername) == constant("INPUT_NAME")) {
	 $this->setName($fromUsername, $keyword);
	 $this->setStep($fromUsername, constant("START_GAME"));
	 return "你好，" . $keyword . "同学。请输入任意内容，开始我们的24点职业生涯！任何时候输入 主页 返回主菜单，输入 排名 查看当前排名~";
	 }

	 if ($this->getStep($fromUsername) == constant("START_GAME")) {
	 $numbers = $this->getNumbers();
	 $this->setStep($fromUsername, constant("TIMING_START"));
	 return "游戏规则：使用+-*/四则运算得出结果为24即可。\n请听题！" . $this->getNumbers();
	 }

	 if ($this->getStep($fromUsername) == constant("TIMING_START")) {
	 if ($this->calcStr($keyword)) {
	 //$this->setStep($fromUsername, constant("TIMING_END"));
	 $this->setGrade($fromUsername, 5);
	 $this->setStep($fromUsername, constant("START_GAME"));
	 return "结果等于24！你现在的分数是：".$this->getGrade($fromUsername);
	 }
	
	 return "结果错误！骗子，根本就不等于24！";
	
	 //$this->setStep($fromUsername, constant("TIMING_END"));
	 }

	 return "我擦，系统出问题了。抱了个歉哈！";
	 }

	//计算排名
	private function getRank($fromUsername){
	 $mysql = new SaeMysql();
	 $grade = $this->getGrade($fromUsername);
	 $sql = "SELECT COUNT( * ) FROM `24points` WHERE `grade` > ".$grade."";
	 $mysql->closeDb();
	 return intval($mysql->getVar($sql))+1;
	}

	//计算成绩
	private function setGrade($fromUsername, $add){
	 $mysql = new SaeMysql();
	 $sql = "SELECT grade FROM `24points` WHERE `userid` = '" . $fromUsername . "'";
	 $grade = intval($mysql->getVar($sql)) + $add;
	 $sql = "UPDATE `24points` SET `grade` = '" . $grade . "' WHERE `userid` ='" . $fromUsername . "';";
	 $mysql->runSql($sql);
	 $mysql->closeDb();
	}
	
	//获得成绩
	private function getGrade($fromUsername){
	 $mysql = new SaeMysql();
	 $sql = "SELECT grade FROM `24points` WHERE `userid` = '" . $fromUsername . "'";
	 $mysql->closeDb();
	 return intval($mysql->getVar($sql));
	}


	//计算等式，返回正确或者错误
	 private function calcStr($keyword) {
	 $keyword = str_replace("（","(",$keyword);
	 $keyword = str_replace("）",")",$keyword);
	 $keyword = str_replace("&divide;","/",$keyword);
	 $keyword = str_replace("／","/",$keyword);
	 $keyword = str_replace("&times;","*",$keyword);
	 $atr_arr = str_split($keyword);
	 $new_atr = '';
	 for ($i = 0; $i < strlen($keyword); $i++) {
	 $new_atr = $new_atr . $atr_arr[$i];
	 }
	 $s = eval("return $new_atr;");
	 if ($s == 24) {
	 return true;
	 }

	 return false;
	 }

	//是否是第一次
	 private function isFirst($fromUsername) {
	 $mysql = new SaeMysql();
	 $sql = "SELECT * FROM `24points` WHERE `userid` = '" . $fromUsername . "'";
	 $data = $mysql->getData($sql);
	 if (count($data) == 0) {
	 $sql = "INSERT INTO `24points` (`userid`, `step`) VALUES ('" . $fromUsername . "', '" . constant("INPUT_NAME") . "');";
	 $mysql->runSql($sql);
	 $mysql->closeDb();
	 return true;
	 }
	 return false;
	 }

	//获取当前的步骤
	 private function getStep($fromUsername) {
	 $mysql = new SaeMysql();
	 $sql = "SELECT step FROM `24points` WHERE `userid` = '" . $fromUsername . "'";
	 $mysql->closeDb();
	 return $mysql->getVar($sql);
	 }

	//获取随机的四个数字用空格隔开
	 private function getNumbers() {
	 $rand_id = rand(1, 1362);
	 $mysql = new SaeMysql();
	 $sql = "SELECT num1 FROM `24data` WHERE `id` = '" . $rand_id . "'";
	 $num1 = $mysql->getVar($sql);
	 $sql = "SELECT num2 FROM `24data` WHERE `id` = '" . $rand_id . "'";
	 $num2 = $mysql->getVar($sql);
	 $sql = "SELECT num3 FROM `24data` WHERE `id` = '" . $rand_id . "'";
	 $num3 = $mysql->getVar($sql);
	 $sql = "SELECT num4 FROM `24data` WHERE `id` = '" . $rand_id . "'";
	 $num4 = $mysql->getVar($sql);
	 $mysql->closeDb();
	 $numbers = $num1 . " " . $num2 . " " . $num3 . " " . $num4;
	 return $numbers;
	 }

	//设置当前操作的步数
	 private function setStep($fromUsername, $step) {
	 $mysql = new SaeMysql();
	 $sql = "UPDATE `24points` SET `step` = '" . $step . "' WHERE `userid` ='" . $fromUsername . "';";
	 $mysql->runSql($sql);
	 $mysql->closeDb();
	 }

	//设置用户昵称
	 private function setName($fromUsername, $username) {
	 $mysql = new SaeMysql();
	 $sql = "UPDATE `24points` SET `username` = '" . $username . "' WHERE `userid` ='" . $fromUsername . "';";
	 $mysql->runSql($sql);
	 $mysql->closeDb();
	 }

	

	//验证微信
	 public function valid() {
	 $echoStr = $_GET["echostr"];
	 //valid signature , option
	 if ($this->checkSignature()) {
	 echo $echoStr;
	 exit;
	 }
	 }

	//检查签名
	 private function checkSignature() {
	 $signature = $_GET["signature"];
	 $timestamp = $_GET["timestamp"];
	 $nonce = $_GET["nonce"];

	 $token = TOKEN;
	 $tmpArr = array($token, $timestamp, $nonce);
	 sort($tmpArr);
	 $tmpStr = implode($tmpArr);
	 $tmpStr = sha1($tmpStr);

	 if ($tmpStr == $signature) {
	 return true;
	 } else {
	 return false;
	 }
	 }
	}

	?>
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