小程序 消息推送配置token无效（解决方法）订阅消息

// 验证token
function verifyToken(){
   $signature = $_GET["signature"];
   $timestamp = $_GET["timestamp"];
   $nonce = $_GET["nonce"];
   $token = '571247942';//和 token（令牌）一一对应
   $tmpArr = array($token, $timestamp, $nonce);
   sort($tmpArr, SORT_STRING);
   $tmpStr = implode( $tmpArr );
   $tmpStr = sha1( $tmpStr );
   if ($tmpStr == $signature ) {
       echo $_GET['echostr'];
   } else {
       echo 'false';
   }
}

private function checkSignature(){
    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];
    $token = TOKEN;
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr, SORT_STRING);
    $tmpStr = implode( $tmpArr );
    $tmpStr = sha1( $tmpStr );
    if ($tmpStr == $signature ) {
        return true;
    } else {
        return false;
    }
}