Text difference comparison checker to create pages like Stack Overflow's revisions page

[eluser]karimmaassen[/eluser]
Hi!

Is there a good practice to create a revision page like this one on Stack Overflow?

Is there a library worth looking into? Does anyone have some good insights regarding text difference comparison?

Thanks!

[eluser]nilesh+[/eluser]
http://pear.php.net/package/Text_Diff/redirected and https://github.com/paulgb/simplediff/blo...lediff.php

[eluser]karimmaassen[/eluser]
Thanks! Just what I was looking for!