cURL - 使用 PHP 发送 GET 请求

Question

I can't understand where i am doing wrong.

below is my code:

$message = "testing from the application.";
$mobile_number = ""; //hidden for security
$sender = ""; //hidden for security    
$ch = curl_init(""); //hidden for security, http://ip
curl_setopt($ch, CURLOPT_URL, "api.php?username=&password=&number=$mobile_number&sender=$sender&type=0&message=$message");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_NOBODY, true);
echo $output = curl_exec($ch);
echo curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

curl_getinfo return 0, and $output did't return anything, but the Document says if the request successful then the $output is 1101.

I tested it in the postman, the result is ok.

Answer 1

Based on your final comment, since the problem was due to the URL parameters not being url encoded, the simplest way to do so I think is like this:

$params = array(
    'message'  => "testing from the application.",
    'number'   => "", //hidden
    'sender'   => "", //hidden
    'username' => $username,
    'password' => $password,
    'type'     => 0,
);

$url = 'api.php?'. http_build_query($params);

curl_setopt($ch, CURLOPT_URL, $url);

See http_build_query() for more information. It will safely encode the array into a string suitable for URL encoded HTTP POST requests, or for query string parameters.

When a cURL request fails, seeing everything returned by curl_getinfo() is helpful too.

In this case I would have thought the HTTP code would have been 400 , for bad request. Also you call do echo curl_error($ch); for a human-readable error message.