PHP Cache Example

gistfile1.aw

<?php

define("CACHE_FILE_NAME", "cache.html");
define("CACHE_TIME", 1 * 60 * 60);

// timeout cache (you can also delete the file on update to page and check for existing file only or combination of both) 
if (filemtime(CACHE_FILE_NAME) + CACHE_TIME >= time() ) {
    echo file_get_contents(CACHE_FILE_NAME);
    return;
}

// start buffering output
ob_start();

// do stuff here

// get the buffered output
$contents = ob_get_clean();

file_put_contents(CACHE_FILE_NAME, $contents);

echo $contents;