This is something I always have to Google every time I need it so here it is.
If you are playing with API's it probably uses a GET method such as:
http://the-api.com/method/ID/get-results
This kinds of API usually return jSON data, which is great. Here's how cURL this URL and parse the jSON data using PHP:
$url = "API-URL";
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
$result=curl_exec($ch);
$json_results = json_decode($result, true);
print_r($json_results);
Code language: PHP (php)