微信公共平台给公共号发消息成功的代码

<?php<br>
/**<br>
  * wechat php test<br>
  */<br>
<br>
//define your token<br>
define("TOKEN", "weixin");<br>
$wechatObj = new wechatCallbackapiTest();<br>
$wechatObj->valid();<br>
<br>
class wechatCallbackapiTest<br>
{<br>
	public function valid()<br>
    {<br>
        $echoStr = $_GET["echostr"];<br>
<br>
        //valid signature , option<br>
        if($this->checkSignature()){<br>
        	echo $echoStr;<br>
        	exit;<br>
        }<br>
    }<br>
<br>
    public function responseMsg()<br>
    {<br>
		//get post data, May be due to the different environments<br>
		$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];<br>
<br>
      	//extract post data<br>
		if (!empty($postStr)){<br>
                <br>
              	$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);<br>
                $fromUsername = $postObj->FromUserName;<br>
                $toUsername = $postObj->ToUserName;<br>
                $keyword = trim($postObj->Content);<br>
                $time = time();<br>
                $textTpl = "<xml><br>
							<ToUserName><![CDATA[%s]]></ToUserName><br>
							<FromUserName><![CDATA[%s]]></FromUserName><br>
							<CreateTime>%s</CreateTime><br>
							<MsgType><![CDATA[%s]]></MsgType><br>
							<Content><![CDATA[%s]]></Content><br>
							<FuncFlag>0</FuncFlag><br>
							</xml>";             <br>
				if(!empty( $keyword ))<br>
                {<br>
              		$msgType = "text";<br>
                	$contentStr = $keyword;<br>
                	$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);<br>
                	echo $resultStr;<br>
                }else{<br>
                	echo "Input something...";<br>
                }<br>
<br>
        }else {<br>
        	echo "";<br>
        	exit;<br>
        }<br>
    }<br>
		<br>
	private function checkSignature()<br>
	{<br>
        $signature = $_GET["signature"];<br>
        $timestamp = $_GET["timestamp"];<br>
        $nonce = $_GET["nonce"];	<br>
        		<br>
		$token = TOKEN;<br>
		$tmpArr = array($token, $timestamp, $nonce);<br>
		sort($tmpArr);<br>
		$tmpStr = implode( $tmpArr );<br>
		$tmpStr = sha1( $tmpStr );<br>
		<br>
		if( $tmpStr == $signature ){<br>
			return true;<br>
		}else{<br>
			return false;<br>
		}<br>
	}<br>
}<br>
<br>
?>