Just a little nugget:

if (strtotime($php_row->end_date) < time()) {
$php_bgcolor = $php_record_row_expired_bgcolor;
}

My version:

print "Updated at:".$track->data(updated_at)."\n";
print "File:".strtotime($track->data(updated_at))."\n";
print "now:".time()."\n";
$diff = time() - strtotime($track->data(updated_at));
print "Diff:".$diff;
$count = $track->data(count);
if ( ! isset($count) ) $count = 0;
// De-bounce
if ( $diff > 5 ) {
$count = $count + 1;
$track->setall( array( "count" => $count  ) ) ;
$track->update();
}

From: http://www.issociate.de/board/goto/926394/Comparing_PHP_Dates_with_MySQL_Dates.html