如何通过HTTP Post将请求发送到php中的URL

Question

I have website that has page for donation. Merchants registered on the Gateway are to send transaction requests to GTPay via HTTP Post to URL https://ibank.gtbank.com/GTPay/Tranx.aspx

When I submit my request I see this page of the above URL displayed inside my donation page instead of taking me to the URL Below is my code:

$url = 'https://ibank.gtbank.com/GTPay/Tranx.aspx';
$fields = array(
        'gtpay_mert_id' => urlencode($gtpay_mert_id),
        'gtpay_tranx_id' => urlencode($gtpay_tranx_id),
        'gtpay_tranx_amt' => urlencode($gtpay_tranx_amt),
        'gtpay_tranx_curr' => urlencode($gtpay_tranx_curr),
        'gtpay_cust_id' => urlencode($gtpay_cust_id),
        'gtpay_tranx_noti_url' => urlencode($gtpay_tranx_noti_url),
        'gtpay_hash' => urlencode($gtpay_hash)
    );


//url-ify the data for the POST
    foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
    rtrim($fields_string, '&');

    $form_files=array();
    $form_options=array( 'cookies' => array( 'auth' => $auth ) );
    http_post_fields($url, $fields, $form_files, $form_options);
//open connection
    $ch = curl_init();

//set the url, number of POST vars, POST data
    curl_setopt($ch,CURLOPT_URL, $url);
    curl_setopt($ch,CURLOPT_POST, count($fields));
    curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

//execute post
    $result = curl_exec($ch);

//close connection
    curl_close($ch);

Answer 1

Request made using cURL won't take you to the URL. It will just process the request and return data back to your end.

You need to submit your request using an HTML form with your fields.

Something like this:

<form action=" https://ibank.gtbank.com/GTPay/Tranx.aspx" method="post">

<!-- Saved buttons use the "secure click" command -->
<input type="hidden" name="cmd" value="_s-xclick">

<!-- Saved buttons are identified by their button IDs -->
<input type="hidden" name="hosted_button_id" value="221">

<!-- Saved buttons display an appropriate button image. -->
<input type="image" name="submit" border="0"
src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif"
alt="PayPal - The safer, easier way to pay online">
<img alt="" border="0" width="1" height="1"
src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" >

</form>