微信公众平台的应用开发

微信公众平台是个可以开发成不错的应用，譬如php100的php函数查询，小贱鸡等都是基于微信公众平台的，今天我就对于微信开发平台给大家详细的介绍一下！ 首先先申请微信公众平台地址：http://mp.weixin.qq.com 2.设置好微信公众平台账号，点击高级功能关闭编辑模式，然后打开开发者模式 3.点击成为开发者，然后提交你的url记住是你的文件名到譬如http://yun.widuu.com/weixin.class.php!然后随意填写你的token,不要点击提交！下载下边的文件，修改token对应你自己编写的token!

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

//define your token
define("TOKEN", "xiaowei");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->valid();
//等你提交完成后，注释掉上边的$wechatObj->valid();然后去掉//$wechatObj->responseMsg();的// 然后就可以了
//$wechatObj->responseMsg();

class wechatCallbackapiTest
{
	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)){
                
              	$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $keyword = trim($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>
							<FuncFlag>0</FuncFlag>
							</xml>";             
				if(!empty( $keyword ))
                {
                       //结合数据库然后开发你的逻辑
					switch($keyword){
						case "php":
							$msgType = "text";
							$content="欢迎大家学习PHP";
							$result=sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $content);
							echo $result;
							break;
						case "肖伟" :
							$msgType = "text";
							$content="博客作者呀？？？";
							$result=sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $content);
							echo $result;
							break;
						default:
							$msgType = "text";
							$contentStr = "刚刚开始还没有您需要的数据";
							$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
							echo $resultStr;
							break;

					}
		
                }else{
                	echo "Input something...";
                }

        }else {
        	echo "";
        	exit;
        }
    }
		
	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;
		}
	}
}

?>