php recurrente

test.php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://app.recurrente.com/api/checkouts');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "{ \"items\": [{ \"price_id\": \"pr_XXXXX\" }] }");

$headers = array();
$headers[] = 'X-Public-Key: pk_live_XXXXX';
$headers[] = 'X-Secret-Key: sk_live_XXXXX';
$headers[] = 'Content-Type: application/json';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);