//this function is used to scan directories for certain filenames
/*
dir - the directory to scan
filenamepattern - the pattern expression to look for in the file names
empty - what to return if the directory is empty
*/

function scandir ($sdir, $filenamepattern, $empty){
        $filearray=array();
        $scanning = opendir($sdir);

        while (false != ($filename = readdir($scanning))){
                if (eregi($filenamepattern, $filename)){
                        $filearray[] = $filename;
                }
        }

        closedir($scanning);
        if (count($filearray)=="0"){
                $filearray[0]=$empty;
        }

        return $filearray;
}

  /* Generated how long it page took to load
     it will display the result in seconds  */

  function utime () {
      $time = explode( " ", microtime());
          $usec = (double)$time[0];
          $sec = (double)$time[1];
          return $sec + $usec;
  }


          /* Some variables for the rending time of the page...
             How long the page took to load                 */
                $generate_start = utime();
                $generate_end = utime();
                $generate_run = $generate_end - $generate_start;
                $page_generate = "Page generated in approximately " .  substr($generate_run, 0, 5) . " seconds.";