<?php
    // Settings
    $cachedir = './cache/'; // Directory to cache files in (keep outside web root)
    $cachetime = 7200; // Seconds to cache files for
    $cacheext = 'cache'; // Extension to give cached files (usually cache, htm, txt)

    // Script
    $page = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; // Requested page
    $cachefile = $cachedir . md5($page) . '.' . $cacheext; // Cache file to either load or create

    $cachefile_created = (@file_exists($cachefile)) ? @filemtime($cachefile) : 0;
    @clearstatcache();

    // Show file from cache if still valid
    if (time() - $cachetime < $cachefile_created) {
        //ob_start('ob_gzhandler');
        @readfile($cachefile);
        //ob_end_flush();
?>
<div class="footer">Page took <?=round((utime() - $stime)*1000, 2);?>ms to load</div>
</body>
</html>
<?
        exit();
    }

    // If we're still here, we need to generate a cache file
    ob_start();
?>