php 微信1

define("TOKEN","aaa");
$wechatObj = new wechatCallbackapiTest();
//$wechatObj->valid();
$wechatObj->responseMsg();
$wechatObj->responseNewsMsg();
class wechatCallbackapiTest
{
	public function valid()
    {
        $echoStr = $_GET["echostr"];
        if($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 )){
				$msgType = "text";
				if($keyword=='你好'){
					$contentStr = "您好，欢迎关注Claire平台，发1.接收供应信息，2.接收资讯信息";
				}elseif ($keyword=='1'){
					$contentStr = "hello 返回供应!";
				}elseif($keyword=="2"){
					$contentStr = "hello 返回资讯!";
				}else{
					$contentStr = "欢迎关注Claire平台，发1.接收供应信息，2.接收资讯信息";
				}
				$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
				echo $resultStr;
			}else{
				echo "Input something...";
			}
		}else {
			echo "11";
			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;
		}
	}
}