PHP CURL Tranzilla

<?php


$host = 'https://secure5.tranzilla.com/31.cgi';

$params = array(
    'supplier' => 'Supplier',
    'sum' => '10.00',
    'price' => '5.00',
    'cname' => 'Product',
    'city' => 'Street',
    'zipCode' => '332311',
    'email' => 'example@example.com',
    'cardNum' => '9999999999',
    'eYear' => '2015',
    'eMonth' => '2015',
    'first_name' => 'First Name',
    'supplier' => 'SUPPNUMBER'
);

try
{
    $curl= curl_init();
    curl_setopt($curl, CURLOPT_URL, $host);
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_FAILONERROR, true);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $params);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
    $result = curl_exec($ch);
    curl_close($curl);

    $error = curl_error($curl_connection);
    if ( ! empty($error)) { die($error); }
}
catch (ErrorException $e)
{
    die($e->getMessage());
}

?>