Code snippets
Example code snippets for signing and sending requests
class Finrax
{
private $apiKey;
private $apiSecret;
private $baseUrl = 'https://payments.finrax.com';
public function __construct(string $apiKey, string $apiSecret)
{
$this->apiKey = $apiKey;
$this->apiSecret = $apiSecret;
}
public function makeRequest($method, $endpoint, array $body = [], array $query = [])
{
$method = strtoupper($method);
$qs = http_build_query($query, '', '&');
$path = ($qs == '') ? $endpoint : $endpoint . '?' . $qs;
$ch = curl_init();
$jsonBody = '';
if ($method == 'POST' || $method == 'PUT' || $method == 'PATCH') {
$jsonBody = json_encode($body, JSON_UNESCAPED_SLASHES);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonBody);
}
curl_setopt_array($ch, [
CURLOPT_URL => $this->baseUrl . $path,
CURLOPT_CUSTOMREQUEST => $method,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'Authorization: ' . $this->buildAuthorizationHeaderValue($path, $jsonBody)
]
]);
$response = curl_exec($ch);
curl_close($ch);
return json_decode($response, true);
}
private function buildAuthorizationHeaderValue($path, $jsonBody = '')
{
$timestamp = intval(microtime(true) * 1000);
$signaturePayload = $path . $timestamp . $jsonBody;
$signature = hash_hmac('sha256', $signaturePayload, $this->apiSecret);
return "FRX-API API-Key={$this->apiKey}," .
"Signature={$signature}," .
"Timestamp={$timestamp}";
}
}
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