Managing aliases and redirects

404.php

<?php
/**
 * Test case
 */

// Redirection array
$i = array(
        "/match/URI/" => "http://company.com/"
);

// Set destination
$d = $i[$_SERVER['REQUEST_URI']];

if(isset($d)) {
header("HTTP/1.1 301 Moved Permanently");
header("Location: ". $d);
} else {
header("HTTP/1.1 404 Not Found");
print "Page not found";
}
?>

Simple redirection script.