I am looking to secure a section of a site and have been trying to
locate a sample to learn from. Does anyone have a reference to
recommend? Sample class or other that I could either learn from or
adapt to meet my needs.

Thank you,

QB

I had looked for a few simple ones quite some time ago. Take a look
at X-Protection - http://www.hotscripts.com/Detailed/44885.html. I
found it quite basic, but it contains the basics to secure your site.

This package is very simple to set-up initially (only one config.php
to modify), but assumes that a database containing the user
information already exists. There is no method of user creation or
user management, as that would be managed by the already existent
database.

This package assumes that there is an existent database which would
contain all extra 'features' - such as name, email, gender, address,
etc, as well as an admin or user creation area. This script, as is,
only provides a method of protecting a page, and requiring a login -
all other functions such as user creation and modification would have
to be programmed in addition to this tool.