Php – Find url and get ip address of website after redirect

http-redirectip addressPHPurl

If I have :

domainA.com/out.php :

<?php
  header('location: http://domainB.com/');
?>

Is it possible to get url : domainB.com and it's IP Address, with domanA.com/out.php from domainC.com?

What I want :

domainA.com/index.php

<?php
   $data = getUrlandIp("domainA.com/out.php");
   echo $data[0];  # wanted output (URL) : domainB.com
   echo $data[1];  # wanted output (IP) : 133.133.133.133
?>

Best Answer

If you need to get all the redirects, you can do

function getRedirectsToUri($uri)
{
    $redirects = array();
    $http = stream_context_create();
    stream_context_set_params(
        $http,
        array(
            "notification" => function() use (&$redirects)
            {
                if (func_get_arg(0) === STREAM_NOTIFY_REDIRECTED) {
                    $redirects[] = func_get_arg(2);
                }
            }
        )
    );
    file_get_contents($uri, false, $http);
    return $redirects;
}

This will return an array holding all the redirects with the last entry being the final destination.

Example (demo)

print_r(getRedirectsToUri('http://bit.ly/VDcn'));

Output

Array ( 
    [0] => http://example.com/ 
    [1] => http://www.iana.org/domains/example/ 
)

You'd have to lookup the IP's manually though (see other answers here) but note that a redirect target doesnt have to be a hostname. It can very well be an IP as well.

Examples

Roger Pate

This is my name, which is an identifier. It is like a URI, but cannot be a URL, as it tells you nothing about my location or how to contact me. In this case it also happens to identify at least 5 other people in the USA alone.

4914 West Bay Street, Nassau, Bahamas

This is a locator, which is an identifier for that physical location. It is like both a URL and URI (since all URLs are URIs), and also identifies me indirectly as "resident of..". In this case it uniquely identifies me, but that would change if I get a roommate.

I say "like" because these examples do not follow the required syntax.

Popular confusion

From Wikipedia:

In computing, a Uniform Resource Locator (URL) is a subset of the Uniform Resource Identifier (URI) that specifies where an identified resource is available and the mechanism for retrieving it. In popular usage and in many technical documents and verbal discussions it is often incorrectly used as a synonym for URI, ... [emphasis mine]

Because of this common confusion, many products and documentation incorrectly use one term instead of the other, assign their own distinction, or use them synonymously.

URNs

My name, Roger Pate, could be like a URN (Uniform Resource Name), except those are much more regulated and intended to be unique across both space and time.

Because I currently share this name with other people, it's not globally unique and would not be appropriate as a URN. However, even if no other family used this name, I'm named after my paternal grandfather, so it still wouldn't be unique across time. And even if that wasn't the case, the possibility of naming my descendants after me make this unsuitable as a URN.

URNs are different from URLs in this rigid uniqueness constraint, even though they both share the syntax of URIs.

Javascript – Get current URL with jQuery

To get the path, you can use:

var pathname = window.location.pathname; // Returns path only (/path/example.html)
var url      = window.location.href;     // Returns full URL (https://example.com/path/example.html)
var origin   = window.location.origin;   // Returns base URL (https://example.com)