PEAR HTML_Template_IT provides two APIs to work with templates, a simple template API and an extended version. It supports blocks (including nested blocks), external file inclusion, and a custom tags format. With ITX, it is possible to modify blocks, replace or add blocks from files, and use callback functions.
Wap-GuestBook is a WAP-based guestbook. It has the same features as a normal Web-based guestbook. It contains fields for name, email address, comments, and various optional fields. It stores the information in a database. It has built-in word censor, email-validator, and URL-validator functions. A user can view results either by ASC or DESC order.
The Text_Wiki package allows you to transform text structured using Wiki rules into any defined target output format. For example, you can convert Tavi-style Wiki text into XHTML, original C2-style Wiki text into XML, MeatBall style Wiki text into LaTeX, or any other Wiki markup rules into any other format (provided it's programmed properly).