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php curl not getting same response as fiddler

This is my PHP code : 

$source = $_POST['source'];
$destination = $_POST['destination'];
$class = $_POST['class'];
$day = $_POST['day'];
$month = $_POST['month'];

$data = array(
    'lccp_src_stncode_dis' => $source,
    'lccp_dstn_stncode' => $destination,
    'lccp_classopt' => $class,
    'lccp_day' => $day,
    'lccp_month' => $month
);

# Create a connection
$url = 'data as per raw req ';
$ch = curl_init($url);

echo $ch." <br>";

# Form data string
$postString = http_build_query($data);

echo $postString;
$header = array (   
            'Host' => 'data as per raw req '
            'Connection'=> 'keep-alive',
            'Content-Length'=> '180',
            'Cache-Control'=> 'max-age=0',
            'Accept'=> 'text/html',
            'Origin'=> 'data as per raw req ',
            'User-Agent' => '',
            'Content-Type' => 'application/x-www-form-urlencoded',
            'Referer': 'data as per raw req '
            'Accept-Encoding'=> '',
            'Accept-Language' => 'en-US,en;q=0.8'

    );

# Setting options
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postString);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
//# Get the response
curl_setopt($ch, CURLOPT_POSTFIELDS, 
$response = curl_exec($ch);
curl_close($ch);

#print response
echo "
$response
";

receiving form data from:

<html>
    <form method="post" action="poster.php">
        <table>
            <tr><td>source:</td><td><input type="text" name="source"></td></tr>
            <tr><td>destination:</td><td><input type="text" name="destination"></td></tr>
            <tr><td>day:</td><td><input type="text" name="day"></td></tr>
            <tr><td>month:</td><td><input type="text" name="month"></td></tr>
            <tr><td>class:</td><td><input type="text" name="class"></td></tr>
            <tr><td><input type="submit" name="submit" value="Submit"></td>
            <td><input type="reset" name="reset" value="Reset"></td></tr>
        </table>
</form>
</html>

this is the raw request

POST http://www.indianrail.gov.in/cgi_bin/inet_srcdest_cgi_date.cgi HTTP/1.1
Host: www.indianrail.gov.in
Connection: keep-alive
Content-Length: 91
Cache-Control: max-age=0
Accept: text/html
Origin: **<---modified since I can't post more than 2 links
User-Agent: 
Content-Type: application/x-www-form-urlencoded
Referer: ** <---modified since I can't post more than 2 links
Accept-Encoding: 
Accept-Language: en-US,en;q=0.8
lccp_src_stncode_dis=ndls&lccp_dstn_stncode=HYB&lccp_classopt=SL&lccp_day=26&lccp_month=6

Fiddler is giving the appropriate response from the cgi, whereas the php script just shows the html container, I've been stuck for over an hour ! Please help !
EDIT: output from verbose :

* Adding handle: conn: 0x2cab910
* Adding handle: send: 0
* Adding handle: recv: 0
* Curl_addHandleToPipeline: length: 1
* - Conn 3 (0x2cab910) send_pipe: 1, recv_pipe: 0
* About to connect() to www.indianrail.gov.in port 80 (#3)
*   Trying 203.176.113.78...
* Connected to www.indianrail.gov.in (203.176.113.78) port 80 (#3)
> POST /cgi_bin/inet_srcdest_cgi_date.cgi HTTP/1.1
Host: www.indianrail.gov.in
Accept: */*
http://www.indianrail.gov.in
http://www.indianrail.gov.in/know_Station_Code.html
Content-Length: 89
Content-Type: application/x-www-form-urlencoded
* upload completely sent off: 89 out of 89 bytes
< HTTP/1.1 200 OK
< Date: Fri, 27 Jun 2014 05:38:17 GMT
* Server Apache/2.2.15 (Red Hat) is not blacklisted
< Server: Apache/2.2.15 (Red Hat)
< Connection: close
< Transfer-Encoding: chunked
< Content-Type: text/html; charset=UTF-8
< 
* Closing connection 3

^Off topic: Why did it just let me post links this time, it should have been recognized as links ?

Also, I would compare sessions in fiddler, but fiddler shows the request to my own app on local host, not from my app to the indian railways site. screenshot : NEVERMIND, NOT ENOUGH REP
EDIT: I'll be happy if someone can show me how to make this request with http_request2 as well
I've posted the exact raw request that gives me the required output with fiddler in the comments, so no, I'm not missing any authentication and cookie headers and the like

Solution

  • header is not to be entered as an associative array, this is wrong :

    $header = array (   
            'Host' => 'data as per raw req '
            'Connection'=> 'keep-alive',
            'Content-Length'=> '180',
            'Cache-Control'=> 'max-age=0',
            'Accept'=> 'text/html',
            'Origin'=> 'data as per raw req ',
            'User-Agent' => '',
            'Content-Type' => 'application/x-www-form-urlencoded',
            'Referer': 'data as per raw req '
            'Accept-Encoding'=> '',
            'Accept-Language' => 'en-US,en;q=0.8'
             );

    correct method :

    $header = array (   
            'Host:*data as per raw req* '
            'Connection:keep-alive',
            'Content-Length:180',
            'Cache-Control:max-age=0',
            'Accept:text/html',
            'Origin:*data as per raw req* ',
            'User-Agent:',
            'Content-Type:application/x-www-form-urlencoded',
            'Referer:*data as per raw req* '
            'Accept-Encoding:',
            'Accept-Language:en-US,en;q=0.8'
             );

    even the data entered in the associative array I've used is formatted to a url encoded post string, apparently everything pretty much has to be entered as it is in a raw http request. cURL doesn't really do any formatting.