项目在调试模式下运行，但不在发布模式下运行

Question

此代码在调试模式下有效，但在释放模式下无效，我已经检查过here和here，但找不到解决方法

  function domainSorgula($domainName, $ext)
{
    $server = trim($this->servers[$ext]);

    $output = "";

    try {
        if ($conn = fsockopen($server, 43)) {
            fputs($conn, strtolower($domainName) . '.' . $ext . "\r\n");
            while (!feof($conn)) {
                $output .= fgets($conn, 128);
            }
            fclose($conn);
            if (stristr($output, "No match") ||
                stristr($output, "No Data") ||
                stristr($output, "No entries") ||
                stristr($output, "No entries") ||
                stristr($output, "NOT FOUND")) {

                $this->durum[$ext]["durum"] = "bos";


            } else {
                $this->durum[$ext]["durum"] = "dolu";
                //  $this->durum[$ext]["son"] =substr($output)

            }


            $bas = strpos($output, "Expiry Date:");
            $t = substr($output, $bas, 23);
            $tarih = str_replace("Expiry Date:", "", $t);

            $this->durum[$ext]["son"] = $tarih;

                    echo '<pre>';
                    echo print_r($output);
                    echo '</pre>';

        } else {

        }

    } catch (exception $e) {
        echo $e->getMessage();
    }

}

我收到此错误“警告：fsockopen（）：无法连接到whois.nic.tr:43”

我在做什么错了会寻求帮助