HTML Clean UP in PHP?

Hi,

Apologies if this has been posted before. I used the search and couldn't seem to find anything.

Is there already a pre-built function or class in PHP that will parse HTML code generated by FCKEditor and fix bugs? For example, remove stupid formatting (e.g. <font> tags), etc.

I use FCKEditor for my CMS's to edit content areas of pages. These generally only include headings, paragraphs, lists, images, etc. FCKEditor a lot of the time throws in code that is not needed and generally screws up our clean code. For example, <font> tags, classes, styles, etc.

I need a function or class written in PHP to parse the code from FCKEditor to remove things not needed.

If there isn't one, fair enough, I will just write one myself. I'm just hoping one already exists!

Thank you.