微信公众号签名错误可能的几种情况

// 贴上jssdk一段代码
public function getSignPackage() {
    $jsapiTicket = $this->getJsApiTicket();
    $url = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
    $timestamp = time();
    $nonceStr = $this->createNonceStr();

    // 这里参数的顺序要按照 key 值 ASCII 码升序排序
    $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";

    $signature = sha1($string);

    $signPackage = array(
      "jsapiTicket"     => $jsapiTicket,
      "appId"     => $this->appId,
      "nonceStr"  => $nonceStr,
      "timestamp" => $timestamp,
      "url"       => $url,
      "signature" => $signature,
      "rawString" => $string
    );
    return $signPackage; 
  }

1.微信公众号菜单链接配置的http,生成签名用的https协议导致签名错误。【解决办法：统一协议】