How to do redir.php?page=http://****.com

I have tried to make a redirect like this: redir.php?page=http://****.com

<?php
if(is_file($_GET['page'])){$page = $_GET['page'];}
else{$page = "DEFAULT.php";}
header("Location: ".$page);
?>

Code (markup):

But I only get:

What should I do?

 

Neither is_file() nor file_exists() is designed to test URLs. They are for checking the local files on the server. If you want to test a URL, you should probably use cURL and look for a response code of 200. Good luck!

 

See if this works:

if($_GET['page']) {
    if(file_get_contents($page)) {
        header("Location: ".$page); die();
    } else {
        header("Location: /DEFAULT.php"); die();
    }
} else {
    echo "Please specify a url";
    //or
    //header("Location: /DEFAULT.php"); die();
}

PHP: