Create an invoice link

$url = 'https://api.passimpay.io/createorder' ;
$platform_id = 1 ; // Platform ID
$apikey = '1111-2222-3333-4444-5555' ; // Secret key
$order_id = '45tv34-5Dfgfg6' ; // Payment ID of your platform. Type string, maximum length 64, allowed characters 'A-Za-z0-9+/=-:.,'
$amount = '100.00' ; // type string, USD, decimals - 2; Please note that an invoice can be paid several times.
$currencies = '10,20,30' ; // List the currency ID separated by commas. Not required
$symbol = 'USD' ; // Which currecny is the account created in. Lenght :3 character in uppercase. Not required
$payload = http_build_query([ 'platform_id' => $platform_id, 'order_id' => $order_id, 'amount' => $amount, 'currencies' => $currencies, 'symbol' => $symbol]);
$hash = hash_hmac( 'sha256' , $payload, $apikey);

$data = [
   'platform_id' => $platform_id,
   'order_id' => $order_id,
   'amount' => $amount,
   'currencies' => $currencies,
   'symbol' => $symbol,
   'hash' => $hash,
];

$post_data = http_build_query($data);

$curl = curl_init();
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_HTTPHEADER, ['Content-Type: application/x-www-form-urlencoded']);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_ENCODING, 'gzip');
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
$result = curl_exec($curl);
curl_close( $curl );

$result = json_decode($result, true);

// Response options
// In case of success
if (isset($result['result']) && $result['result'] == 1)
{
   url = $result['url'];
}
// In case of an error
else
{
   $error = $result['message']; // Error text
}