CURL HTTP 302 Error - php

Question

I'm writing a web scraper for a project, which needs to login and save some pages, but after even login, saving the cookie.txt it redirects back to login page. Looks like it's not logging in.
Here is my code:
<?php
$ch = curl_init();
$cookie_file_path = 'cookie.txt';
$cookie_file_path = realpath($cookie_file_path);
$data = array();
$data['txtUser'] = "username";
$data['txtPass'] = "password";
$postStr = "";
foreach($data as $key=>$d){
$postStr .= $key.'='.urlencode($d).'&';
}
$postStr = substr($postStr,0,-1);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
curl_setopt($ch, CURLOPT_VERBOSE, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
$agent = $_SERVER["HTTP_USER_AGENT"];
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
//new ones
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_URL,"http://madstore.su/login.php");
curl_setopt($ch,CURLOPT_POST,TRUE);
curl_setopt($ch,CURLOPT_POSTFIELDS,$postStr);
curl_exec ($ch); // execute the curl command
echo 'Curl error: ' . curl_error($ch); //no errrors
curl_close ($ch);
unset($ch);
$ch = curl_init();
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
curl_setopt($ch, CURLOPT_VERBOSE, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
curl_setopt($ch, CURLOPT_URL,"http://madstore.su/index.php");
//new ones
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_exec ($ch);
echo 'Curl error: ' . curl_error($ch);
curl_close ($ch);
?>
I have read about all questions on StackOverflow and searching on Google since hours.
Here is what I'm getting in cookie.txt:
# Netscape HTTP Cookie File
# http://curl.haxx.se/rfc/cookie_spec.html
# This file was generated by libcurl! Edit at your own risk.
#HttpOnly_.madstore.su TRUE / FALSE 1577145000 __cfduid d3f365e8218ab84f921e43db0d1500e7c1391327438626
madstore.su FALSE / FALSE 0 PHPSESSID t41g1j9cdl800e9qdj2pq96ef1
Here is what I'm getting as curl error:
HTTP/1.1 302 Found
Server: cloudflare-nginx
Date: Sun, 02 Feb 2014 08:01:40 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.1.6
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
location: login.php
CF-RAY: f655ad243d007e5-LAX
HTTP/1.1 200 OK
Server: cloudflare-nginx
Date: Sun, 02 Feb 2014 08:01:41 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.1.6
CF-RAY: f655ad5141f07e5-LAX
I will highly appreciate if anyone can help me with this issue.

Answer 1

Your approach is wrong. First browse the login page(http://madstore.su/login.php) using curl so that it can store the cookies into the file.
Then do the curl posting and use the cookie that saved earlier. Also you are missing this POST parameter, so add this with your data.
$data['btnLogin'] = "Log in";
When the login is done, then browse the required page using your final curl's GET.