Need help with cURL request

I need some help with setting up a cURL request to a page. In the netherlands we have this site 'RDW.NL' which gives you the opportunity to check up a vehicle's details by entering the licence plate number.

For businesses, there is a paid alternative to request large amounts of data, but the costs are too high (€1050 + €0,50 per request) to pay this since it's just for personal use and for testing purposes only.

Recently they changed their website and the old scripts stopped working, so I decided to give it a try myself but I'm kind of stuck.

Here's what I have so far:

<?php

    $ckfile = "/tmp/rdwcookie.txt";

    # Setup first URL
    $ch = curl_init("https://ovi.rdw.nl/Default.aspx");
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_COOKIESESSION, true);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $ckfile); 
    $input = curl_exec($ch);

    # Get VIEWSTATE variable
    preg_match('/开发者_如何转开发id="__VIEWSTATE" value="(.*)" \/>/i', $input, $__VIEWSTATE);   
    preg_match('/Set-Cookie: ISAWPLB{(.*)}={(.*)};/i', $input, $__COOKIES);
    preg_match('/Set-Cookie: ASP.NET_SessionId=(.*);/i', $input, $__ASPNET);

    #echo $input;

    # Set options for RDW Call
    $options = array(
        'ctl00$ctl00$PlaceHolderMainContent$PlaceHolderMainContent$txtKenteken' => '16-JS-GK',
        'ctl00%24ctl00%24PlaceHolderMainContent%24PlaceHolderMainContent%24btnZoeken' => 'Zoeken',
        '__VIEWSTATE' => $__VIEWSTATE[1],
        '__EVENTTARGET' => '',
        '__EVENTARGUMENT' => ''
    );

    #echo file_get_contents($ckfile);

    # Setup second URL
    $ch = curl_init("https://ovi.rdw.nl/VoertuigDetails.aspx");
    curl_setopt($ch, CURLOPT_POST, false);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');
    curl_setopt($ch, CURLOPT_POSTFIELDS, $options);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_COOKIE, 'ISAWPLB{'.$__COOKIES[1].'}='.$__COOKIES[2].'; ASP.NET_SessionId='.$__ASPNET[1]);
    #curl_setopt($ch, CURLOPT_COOKIEFILE, $ckfile); 
    $data = curl_exec($ch);

    # Echo data 
    echo $data;

?>

At the first page I try to save all cookies (which works), but sending the CURLOPT_COOKIEFILE does not show up any cookies in the headers of the cURL request. Therefor I used CURLOPT_COOKIE with some preg_matches to get the cookies manually and send them along (this works).

Also the post variables are right.

However, it still complains that the service is offline when I echo $data, this could be the case of course, but when visiting the page and entering some data manually it works perfectly.

So, is there something I'm missing? I can't seem to get the right page loaded with cURL.

Any help would be appreciated.

Used a different source, the SSL was interfering with getting the right response. It works properly with the given example. Thanks for thinking tho.

Are there any redirection which curl may not follow? Specially in php safe-mode php will not follow redirects causing curl_exec return empty string. Check for safe mode and location: headers in your raw response.