REST API 服务：如何通过 PHP curl 正确调用它？

Question

假设我有一个正在运行的服务 API，它响应如下网址：

http://example.com/param/1

它用于 get 和 post 动词。 Param=1 是考虑的参数

我应该如何正确执行 curl 请求以传递参数（POST）？

如果我浏览：http://example.com/param/1 我会得到预期的响应（GET）

但是，如果我执行以下操作，它将无法正常工作：

$service_url = 'http://example.com/';
$curl = curl_init($service_url);
$curl_post_data = array('param'=>1);

curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $curl_post_data);
$curl_response = curl_exec($curl);
if ($curl_response === false) {
    $info = curl_getinfo($curl);
    curl_close($curl);
    die('error occured during curl exec. Additional info: ' . var_export($info));
}
curl_close($curl);
$decoded = json_decode($curl_response);
if (isset($decoded->response->status) && $decoded->response->status == 'ERROR') {
    die('error occured: ' . $decoded->response->errormessage);
}
echo 'response ok!';
var_export($decoded->response);

即使像下面这样改变它也行不通：

$service_url = 'http://example.com/param/1';
$curl = curl_init($service_url);

curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
$curl_response = curl_exec($curl);
if ($curl_response === false) {
    $info = curl_getinfo($curl);
    curl_close($curl);
    die('error occured during curl exec. Additional info: ' . var_export($info));
}
curl_close($curl);
$decoded = json_decode($curl_response);
if (isset($decoded->response->status) && $decoded->response->status == 'ERROR') {
    die('error occured: ' . $decoded->response->errormessage);
}
echo 'response ok!';
var_export($decoded->response);

这反而有效：但我想它仍然是一个 GET

$service_url = 'http://example.com/param/1';
$curl = curl_init($service_url);
$curl_response = curl_exec($curl);
if ($curl_response === false) {
    $info = curl_getinfo($curl);
    curl_close($curl);
    die('error occured during curl exec. Additional info: ' . var_export($info));
}
curl_close($curl);
$decoded = json_decode($curl_response);
if (isset($decoded->response->status) && $decoded->response->status == 'ERROR') {
    die('error occured: ' . $decoded->response->errormessage);
}
echo 'response ok!';
var_export($decoded->response);

Answer 1

$service_url = 'http://example.com/param/1';     
$ch = curl_init($service_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "param1=value1&param2=value2&..");
$response = curl_exec($ch);
curl_close($ch);