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function checkCacheForFileMatchingFeed ($nameWeShouldLookFor, $cache_path = './cache') {
        $cachedFile = false;
        $directoryHandle = opendir($cache_path);

        //if the dir does not exist
        if ($directoryHandle == false) {
                //try to make a cache directory
                $dirmade = mkdir( $cache_path, 0744);
                if($dirmade == false){
                        //if we can not make the directory exit
                        echo 'cache does not exist, and unable create a cache directory';
                        exit();
                }
                $directoryHandle = opendir($cache_path);
                // we just made the directory, there can be no cached file so just stop now
                // and go to the next step
                return $cachedFile;
        } else {
                // if the dir does exist let's see what is there
                $filesInDirArray = scandir($cache_path);

                foreach($filesInDirArray as $fileName) {
                        //echo '$file';
                        //if the file is not the directory itself of the parent directory
                        if ($fileName != "." && $fileName != "..") {
                                echo $nameWeShouldLookFor . '<br />';
                                $pattern =  '/' . $nameWeShouldLookFor . '/i';
                                echo $pattern;
                                $fileNameMatches = preg_match($fileName, $pattern);
                                if ($fileNameMatches == true) {
                                        echo 'we found a match!';
                                }
                                $nameOfFileFoundInCacheDir = $fileName;
                        }
                }
        }

        // open dir, get list and regex to find file that matches
        // if we dont find a cached file we return false
        return $cachedFile;
}

function getFileFromSource () {
        // use curl to fetch the resource as specified uri
        $fileReference = false;


        return $fileReference;
}

function writeFetchedResourceToFile () {
        // write

}

function serveCachedFileToClient() {
        // after we have checked the cache and found a file or
        // fetched the we will have a file on disk to serve to the client.

}

function getCachedFileOrLoadResourceThenServeFileFromCache () {

        $time = time();
        $cache_path = './cache';
        $maxCacheAge = 7200;
        $remoteFile = 'http://feeds.feedburner.com/MitelFreedomBlog?format=xml';

        $nameWeWouldSaveItBy = urlencode($remoteFile);
        //echo $nameWeWouldSaveItBy;
        $foundCachedfile = checkCacheForFileMatchingFeed ($nameWeWouldSaveItBy);
}