PHP;"> //define your token
define("TOKEN","weixin");
$wechatObj = new wechatCallbackapiTest();
//$wechatObj->valid();
$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;
$type = $postObj->MsgType;
$customevent = $postObj->Event;
$latitude = $postObj->Location_X;
$longitude = $postObj->Location_Y;
$keyword = trim($postObj->Content);
$time = time();
$textTpl = "<xml>
   <ToUserName><![CDATA[%s]]></ToUserName>
   <FromUserName><![CDATA[%s]]></FromUserName>
   <CreateTime>%s</CreateTime>
   <MsgType><![CDATA[%s]]></MsgType>
   <Content><![CDATA[%s]]></Content>
   <FuncFlag>0</FuncFlag>
   </xml>";    
if($type=="event" and $customevent=="subscribe"){
 $contentStr = "感谢你的关注\n<a href="/tag/huifu/" target="_blank" class="keywords">回复</a>1查看联系方式\n<a href="/tag/huifu/" target="_blank" class="keywords">回复</a>2查看最新资讯\n<a href="/tag/huifu/" target="_blank" class="keywords">回复</a>3查看法律文书";
 $msgType = "text";
 $resultStr = sprintf($textTpl,$fromUsername,$toUsername,$time,$msgType,$contentStr);
 echo $resultStr;
 } 
if($type=="image" ){
 $contentStr = "你的<a href="/tag/tupian/" target="_blank" class="keywords">图片</a>很棒！";
 $msgType = "text";
 $resultStr = sprintf($textTpl,$contentStr);
 echo $resultStr;
 } 
if($type=="location" ){
 $contentStr = "你的纬度是{$latitude},经度是{$longitude},我已经锁定！";
 $msgType = "text";
 $resultStr = sprintf($textTpl,$contentStr);
 echo $resultStr;
 }  
if(!empty( $keyword ))
{        
 $msgType = "text";
 if($keyword=="1"){
 $contentStr = "qiphon";}
 if($keyword=="2"){
 $contentStr = "test222";}
 if($keyword=="3"){
 $contentStr = "test333";}     
 $resultStr = sprintf($textTpl,$contentStr);
 echo $resultStr;
}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;
}
}
}

?>