php-redirects-array.php

<?php
$redirects = array(
    "/aboutus.php" => "/about-us/",
    "/blog/2010/02" => "/blog/",
    "/blog/2010/04" => "/blog/",
    "/blog/2010/07" => "/blog/",
    "/blog/2010/12" => "/blog/",
    "/blog/2011/01" => "/blog/",
);

// 301 Redirect from /old to /new.
if (array_key_exists($_SERVER['REQUEST_URI'], $redirects) &&
  // Check if Drupal or WordPress is running via command line
  (php_sapi_name() != "cli")) {
    header('HTTP/1.0 301 Moved Permanently');
    header('Location: ' . $redirects[$_SERVER['REQUEST_URI']]);
    exit();
}