PHP cURL, file_get_contents blank page - php

Question

I'm trying to get a page content with cURL or file_get_content. On many websites it's working but i'm trying to do that on a friend's server and it's not.
I think there is a protection with header or things like that. I get the following error code : 401 forbidden. If i try to reach the same page with a normal browser it works.
Here is my code for the file_get_contents function :
$homepage = file_get_contents('http://192.168.1.3');
echo $homepage; // just a test to see if the page is loaded, it's not.
if (preg_match("/my regex/", $homepage)) {
// ... some code
}
I also tryed with cURL :
$url = urlencode('http://192.168.1.3');
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0');
$result = curl_exec($ch) or die("Not working");
curl_close($ch);
echo $result; // not working ..
Nothing works, maybe i should add more args to curl_setopt ...
Thanks.
PS : If i try with linux (wget) i get an error, but if i try with aria2c it's working.

Answer 1

HTTP Status 401 means that UNAUTHORIZED. You need send the server with username and passwd。
With file_get_contents, you add the second param . That's a context-steam, which you can set header info.
You'd better to use curl for file_get_contents intend to access local file, as it's a block function. Add the option as following, it's a basic authorize.
curl_setopt($ch,CURLOPT_USERPWD,"my_username:my_password");

Answer 2

try this update with useragent
<?php
$curlSession = curl_init();
curl_setopt($curlSession, CURLOPT_URL, 'http://192.168.1.3/');
curl_setopt($curlSession,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');
curl_setopt($curlSession, CURLOPT_BINARYTRANSFER, true);
curl_setopt($curlSession, CURLOPT_RETURNTRANSFER, true);
$homepage = curl_exec($curlSession);
curl_close($curlSession);
echo $homepage ;
?>
if still getting blank page you have to install this add-on on firefox and see the "request-headers" and "response-headers"