This hour describes the available filtering modules for Apache and how to configure them. Filters are Apache modules that take input content, modify it, and return it for further processing or delivery to the client. In this hour, you will learn how to
mod_include to add dynamic content easily
mod_ext_filter to use external programs as filters
Hour 2, “Understanding Apache Internals,” introduced the extension mechanisms of the Apache server, hooks, and filters.
Hooks are appropriate for making decisions based on the request information or manipulating headers. Filters, on the other hand, are appropriate ...