在Android Studio中使用@Contract(Using @Contract with Android Studio)

 也许您必须从​​URL中删除端口号并配置CURLOPT_PORT选项。 
 
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://pc.stephen3.com/gameq.php"); // port removed
curl_setopt($ch, CURLOPT_PORT, 8080);  // that line added
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$err = curl_error($ch);
$resp = curl_exec($ch);
echo $resp;
echo $err;
 
 您还可以使用curl_getinfo($ch)函数获取更多调试信息。 
 
$report=curl_getinfo($ch);
echo "curl_getinfo returned: <br>".$report;

It turns out my host (iPower) restricts cURL to port 80 :(
 
EDIT : I found out that support lied, saying only port 80 is allowed. In fact, they allow port 80 AND 990 (SSL) but you can use port 990 without actually having SSL on. Works perfectly.