PHP beautifiers (libraries for formatting code)

Question

Previously, my intention was to ask:

Do you know any open source SQL formatter/beautifier library for PHP projects?

But I think, I'd better ask:

Which code formatting libraries written in PHP are the best?

Let's list them all in one place.

My types:

• for CSS syntax: Css Tidy
• for PHP: PEAR's PHP_Beautifier
• for HTML syntax: Tidy

Edit:

To clarify the question: I'm asking your opinion about code formatters written in PHP, formatting different languages and syntaxes, not only PHP source files.

By formatting I mean correcting whitespace, layout, correcting against coding standards etc., not syntax highlighting.

Answer 1

for PHP : inbuilt PHP function to highlight PHP syntax highlight-file or highlight-string

Link : http://php.net/manual/en/function.highlight-file.php

Also, Check out what highlighters used in sites like http://pastebin.com/ and http://pastie.org/ which allow to share code.

Answer 2

http://qbnz.com/highlighter/