在不离开页面/网站的情况下提交外部表单

Question

I looked through the site for answers to this, but nothing's spot on to what I need (this is close, except it doesn't actually submit the form: Prevent form redirect OR refresh on submit?).

I'm trying to incorporate a mailing list sign-up (code borrowed from a sign-up page hosted on ReverbNation) to a website.

The form submits properly, but the signee is redirected to a hideously rendered page on ReverbNation's site. I cannot modify their script and don't think there's an API I can use to keep things tidy.

Is there a way I can submit the form in the background, without the user being redirected?

Answer 1

Here's an example in PHP for tunneling a POST.

//set POST variables
$url = 'http://domain.com/url-to-post-to';
$fields = array(
            // Add the fields you want to pass through
            // Remove stripslashes if get_magic_quotes_gpc() returns 0.
            'last_name'=>urlencode(stripslashes($_POST['last_name'])),
            'first_name'=>urlencode(stripslashes($_POST['first_name'])),
            'email'=>urlencode(stripslashes($_POST['email']))
        );

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

//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));

// returns the response as a string instead of printing it
curl_setopt($handle, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);

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

//close connection
curl_close($ch);

echo $result;