Curl在实时服务器中返回bool false，但在本地服务器上工作

Question

 $data = array('paymentMethod' => 'NICEPAY', 'goodsName' => 'PROJECT FEE');

 $string = http_build_query($data);

 $ch = curl_init("203.99.61.173:3000/api/users/nicepay");
 curl_setopt($ch, CURLOPT_POST, true);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $string);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

 $response = curl_exec($ch);

 var_dump($response);

 curl_close($ch);

  

我刚尝试从本地服务器发出这个确切的调用，它运行正常。