<?php
// Replace these values with your panel address and API key.
$apiUrl = 'https://your-panel.example/api/v2';
$apiKey = 'YOUR_API_KEY';

$client = curl_init($apiUrl);
curl_setopt_array($client, [
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => http_build_query([
        'key' => $apiKey,
        'action' => 'services',
    ]),
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 20,
    CURLOPT_HTTPHEADER => ['Content-Type: application/x-www-form-urlencoded'],
]);

$response = curl_exec($client);
if ($response === false) {
    throw new RuntimeException(curl_error($client));
}
$status = curl_getinfo($client, CURLINFO_HTTP_CODE);
curl_close($client);

if ($status < 200 || $status >= 300) {
    throw new RuntimeException('API returned HTTP ' . $status . ': ' . $response);
}
$data = json_decode($response, true, 512, JSON_THROW_ON_ERROR);
print_r($data);