posting forms with cURL

Just got a checkout page ready to post data to the payment channel (iDEAL).

first I send the data within an array to the target server like:

$postData['orderid'] = $_POST['order_id'];
$postData['amount'] = $_POST['amount'];
$ch = curl_init("https://i-kassa.rabobank.nl/rik/test/orderstandard.asp");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($ch);
curl_close($ch);
?>

but the target file didn't got any information, I need to populate the values in a querystring like:

$ch = curl_init("https://i-kassa.rabobank.nl/rik/test/orderstandard.asp");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "orderid=1235698&amount=500");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($ch);
curl_close($ch);
?>

is this strange? look to me that a windows server accepting data different, while the first method works great in a lot of (linux ) applications

Strange. I always use the first way and never got a problem.

Maybe there is something else that cause the problem?

no, maybe the target script is bad :D

I use this script to convert the array:

if(!function_exists('http_build_query')) {

function http_build_query($data, $prefix = NULL, $sep = '', $key = '') {

$ret = array();

foreach ((array)$data as $k => $v) {

$k = urlencode($k);

if (is_int($k) && $prefix != null) {

$k = $prefix.$k;

}

if (!empty($key)) {

$k = $key."[".$k."]";

}

if (is_array($v) || is_object($v)) {

array_push($ret,http_build_query($v,"",$sep,$k));

} else {

array_push($ret,$k."=".urlencode($v));

}

}

if (empty($sep)) {

$sep = ini_get("arg_separator.output");

}

return implode($sep, $ret);

}
}
?>