wordpress微信机器人验证失败解决

使用wordpress微信机器人与微信公众号开发配置时，总是token验证失败，网上许多资料显示改代码或改文件名各类方法挺多，有些已经过时或是不全，综合测试后使用如下办法：

vim  /wordpress/wp-content/plugins/weixin-robot-advanced/token.php
# 按如下内容修改
checkSignature()){
            header('content-type:text'); //手动添加
            ob_clean(); //手动添加
            echo $echoStr;
            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;
        }
    }   
  }

  $wechatObj = new wechatCallbackapiTest();
  $wechatObj->valid();
}
#

服务器地址在微信公众号平台开发基本配置里写全地址：
https://servername/wordpress/wp-content/plugins/weixin-robot-advanced/token.php

验证类型：安全

然后可验证token成功。tokenpockettoken是什么tokenviewtokentoken是什么tokenizertokeninsight