Redirect to new location.

redirection.php

<?php

/**
 * Browser Redirection.
 *
 * @param string  $url  Redirect destination.
 * @param integer $code Redirect code.
 *
 * Codes:
 * 
 *    301 - Moved Permanently
 *    302 - Found
 *    303 - See Other
 *    307 - Temporary Redirect (HTTP/1.1)
 *
 * @see http://en.wikipedia.org/wiki/HTTP_303
 */
function redirection($url, $code = 302)
{
    if (0 !== strncmp('cli', PHP_SAPI, 3)) {
        if (true !== headers_sent()) {

            // If using sessions.
            if (strlen(session_id()) > 0) {

                // Avoids session fixation attacks.
                session_regenerate_id(true);

                // Avoids having sessions lock other requests.
                session_write_close();
            }

            if (0 === strncmp('cgi', PHP_SAPI, 3)) {
                header(sprintf('Status: %03u', $code), true, $code);
            }

            header('Location: '. $url, true, (preg_match('~^30[1237]$~', $code) > 0) ? $code : 302);
        }

        exit();
    }
}

$newUrl = 'http'. ((isset($_SERVER['HTTPS'])) ? 's' : '') .'://'. $_SERVER['SERVER_NAME'] .'/some-new-location/';

redirection($newUrl, 303);

/* <> */