At work we have to use a proxy to basically access port 80 for example, we have our own custom logins for each user.
My temporary workaround is using curl to basically login as myself through a proxy and access the external data I need.
Is there some sort of advanced php setting I can set so that internally whenever it tries to invoke something like file_get_contents() it always goes through a proxy? I'm on Windows ATM so it'd be a pain to recompile if that's the only way.
The reason my workaround is temporary is because I need a solution that's generic and works for multiple users instead of using one user's credentials ( Ive considered requesting a separate user account solely to do this but passwords change often and this technique needs to be deployed throughout a dozen or more sites ). I don't want to hard-code credentials basically to use the curl workaround.
To use file_get_content over/through a proxy that doesn't require authentication, something like this should do :
(I'm not able to test this one : my proxy requires an authentication)
$aContext = array( 'http' => array( 'proxy' => 'tcp://192.168.0.2:3128', 'request_fulluri' => true, ), ); $cxContext = stream_context_create($aContext); $sFile = file_get_contents("http://www.google.com", False, $cxContext); echo $sFile;
Of course, replacing the IP and port of my proxy by those which are OK for yours ;-)
If you're getting that kind of error :
Warning: file_get_contents(http://www.google.com) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.0 407 Proxy Authentication Required
It means your proxy requires an authentication.
If the proxy requires an authentication, you'll have to add a couple of lines, like this :
$auth = base64_encode('LOGIN:PASSWORD'); $aContext = array( 'http' => array( 'proxy' => 'tcp://192.168.0.2:3128', 'request_fulluri' => true, 'header' => "Proxy-Authorization: Basic $auth", ), ); $cxContext = stream_context_create($aContext); $sFile = file_get_contents("http://www.google.com", False, $cxContext); echo $sFile;
Same thing about IP and port, and, this time, also LOGIN and PASSWORD ;-)
Now, you are passing an Proxy-Authorization header to the proxy, containing your login and password.
And... The page should be displayed ;-)
Hope this helps ! Have fun !
Use stream_context_set_default function. It is much easier to use as you can directly use file_get_contents or similar functions without passing any additional parameters
This blog post explains how to use it. Here is the code from that page.
<?php // Edit the four values below $PROXY_HOST = "proxy.example.com"; // Proxy server address $PROXY_PORT = "1234"; // Proxy server port $PROXY_USER = "LOGIN"; // Username $PROXY_PASS = "PASSWORD"; // Password // Username and Password are required only if your proxy server needs basic authentication $auth = base64_encode("$PROXY_USER:$PROXY_PASS"); stream_context_set_default( array( 'http' => array( 'proxy' => "tcp://$PROXY_HOST:$PROXY_PORT", 'request_fulluri' => true, 'header' => "Proxy-Authorization: Basic $auth" // Remove the 'header' option if proxy authentication is not required ) ) ); $url = "http://www.pirob.com/"; print_r( get_headers($url) ); echo file_get_contents($url); ?>
Depending on how the proxy login works stream_context_set_default might help you.
$context = stream_context_set_default( array( 'http'=>array( 'header'=>'Authorization: Basic ' . base64_encode('username'.':'.'userpass') ) ) ); $result = file_get_contents('http://..../...');
There's a similar post here: http://techpad.co.uk/content.php?sid=137 which explains how to do it.
function file_get_contents_proxy($url,$proxy){ // Create context stream $context_array = array('http'=>array('proxy'=>$proxy,'request_fulluri'=>true)); $context = stream_context_create($context_array); // Use context stream with file_get_contents $data = file_get_contents($url,false,$context); // Return data via proxy return $data; }
