Data Entry - Page 1 of 3
Current operation: Initial ID entry
Results will appear in this area
A little about this page
This is a sample application written in PHP for web use. A typical
web application requires the user to enter data on a series of forms
and presents results based on that series of forms. So a continuinty
is required between the pages - data needs to be carried forward and
forms provided in context. But there will be a number of users on your
site at the same time, and only in exceptional circumstanes (for
example with multiplayer games or with them bidding against each other)
should the data they are entering be shared.
PHP's sessions provide a built in tool for handling these requirements,
but even using this tool it is very easy to write a piece of logic that's
hard to maintain and includes a great deal of repetition. That's where
the "4 layer model" can come into play - and this page is a demonstration
of the 4 layer model in use.
This example has been put together by Well
House Consultants who provide
training courses in PHP
to help you learn to make best and effective use of this technology.