微信入坑第一弹 微信公众号第一篇推文 第一财经微信公众号 微信公众号第一条消

<span style="font-family:KaiTi_GB2312;font-size:14px;"><?php define("TOKEN","weixin");
$weixinObj = new Wechat();
$weixinObj->valid();

class Wechat{
	public function valid(){
		$echoStr = $_GET['echostr'];
		if($this->checkSignature()){
			echo $echoStr;
			exit;
		}
	}
	//校验方法
	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;
		}
	}
}</span>