微信公众平台后台配置的时候出现“token验证失败”，如图：
服务器程序如下：
//检查签名 public function checkSignature(Request $request) { $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"]; $echostr = $request->echostr; $token = config('wechat.token'); $tmpArr = array($token, $timestamp, $nonce); sort($tmpArr, SORT_STRING); $tmpStr = implode($tmpArr); $tmpStr = sha1($tmpStr); if($tmpStr == $signature){ echo $echostr; exit(); // return true; }else{ return false; } }后来从网上得知，需要使用ob_clean();，如下：
//检查签名 public function checkSignature(Request $request) { $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"]; $echostr = $request->echostr; $token = config('wechat.token'); $tmpArr = array($token, $timestamp, $nonce); sort($tmpArr, SORT_STRING); $tmpStr = implode($tmpArr); $tmpStr = sha1($tmpStr); if($tmpStr == $signature){ ob_clean(); echo $echostr; exit(); // return true; }else{ return false; } }Author:leedaning 本文地址：http://blog.csdn.net/leedaning/article/details/71194645
