//Example 1: Using $_GET to retrieve conference ID $conf_id = $_GET['id']; $url = "http://example.com/api/getConference?id=$conf_id"; $data = file_get_contents($url); $conference = json_decode($data, true); //Example 2: Using cURL to retrieve conference information $conf_id = "123"; $url = "http://example.com/api/getConference?id=$conf_id"; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $data = curl_exec($ch); curl_close($ch); $conference = json_decode($data, true);Brief Description: - Example 1 uses the `$_GET` method to retrieve the ID parameter from the URL and sends a request to the server to retrieve conference information using the parameter provided. The response is stored in a JSON format, and the `json_decode` function is used to convert it into an array. - Example 2 uses cURL library to retrieve conference information as it is more flexible in handling web requests than file_get_contents(). Package/Library: Both examples are independent of any third-party library or package.