$data = $GLOBALS["HTTP_RAW_POST_DATA"];
if (!emptyempty($data)) {//接收消息并处理
$xml = (array)simplexml_load_string($data, ‘SimpleXMLElement', LIBXML_NOCDATA);
return $xml;
}

<"TOKEN", "你的申请上的token");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->valid();
class wechatCallbackapiTest
{
 public function valid()
  {
    $echoStr = $_GET["echostr"];
    //valid signature , option
    if($this->checkSignature()){
     $this->responseMsg();
     exit;
    }
  }
  public function responseMsg()
  {
 //get post data, May be due to the different environments
 $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
    //extract post data
 if (!emptyempty($postStr)){
        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        $fromUsername = $postObj->FromUserName;
        $toUsername = $postObj->ToUserName;
        $keyword = trim($postObj->Content);
        $time = time();
  $msgType = "text";
        $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(!emptyempty( $keyword ))
        {
         $contentStr = $this->keyrep($keyword);
   if( emptyempty($contentStr) )
   {
   $contentStr ="你是故意的吧，没文化真可怕";//你是故意的吧，没文化真可怕;
   }
   //$contentStr = @iconv('UTF-8','gb2312',$keyword);
         $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
         echo $resultStr;
        }else{
         $contentStr = '没文化真可怕，居然不会打字！';//$this->keyrep($keyword);
         //$contentStr = @iconv('UTF-8','gb2312',$keyword);
   $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
         echo $resultStr;
        }
    }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 == $signature ){
  return true;
 }else{
  return false;
 }
 }
 function keyrep($key)
 {
 //return $key;
 if( $key=='嗨' || $key=='在吗' || $key=='你好' ){
  $mt = mt_rand(1,17);
  $array = array(1=>'自杀中，稍后再说...',2=>'有事找我请大叫！',3=>'我正在裸奔，已奔出服务区',4=>'我现在位置：WC； 姿势：下蹲； 脸部：抽搐； 状态：用力中。。。。',5=>'去吃饭了，如果你是帅哥，请一会联系我，如果你是美女...............就算你是美女，我也要先吃饱肚子啊',6=>'
洗澡中~谢绝旁观！！^_^0',7=>'有熊出"妹妹你坐船头"据说很傻逼的人看到都是唱出来的。',9=>'我这辈子只有两件事不会"我脸油吗"反光？"";
 }
 function keylist()
 {
 $array = array(1=>'嗨',2=>'你好',3=>'靠',4=>'在吗',5=>'请问');
 }
}
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