PHP Fine Diff – PHP library to diff strings

PHP Fine Diff – PHP library to diff strings.  I’ve tried a few different implementations and all of them either required an external diff program couldn’t render HTML, or failed to due to enormous resource usage.  PHP Fine Diff does all I need and does it fast.   It’s also rediculously easy to use:

$fineDiff = new FineDiff($strOrig, $strNew);
$htmlDiff = $findDiff->renderDiffToHTML();

Found via this StackOverflow discussion.