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HTML template for 4 layer model
Designing PHP-Based Solutions: Best Practice example from a Well House Consultants training course
More on Designing PHP-Based Solutions: Best Practice [link]

This example is described in the following article(s):
   • Efficient PHP applications - framework and example - [link]
   • Application design in PHP - multiple step processes - [link]

This example references the following resources:

Source code: 4lm_template.htp Module: H115

<!-- This is the template file that's used as the "look and feel"
part of our 4 layer model demo (the "view" of the MVC model if you
like to think of it that way!). It's plain HTML / code the browser
will understand (so you can add in style sheets, Javascript, etc)
with the addition of markers of the form %someword% which the PHP
program elements will replace by real dynamic server side content -->

<title>Example of a session based PHP application</title></head>
<body bgcolor="#FFFFFF">
<h1>Data Entry - Page %current% of %phases%</h1>
Current operation: <b>%doing%</b><hr />
%errmsg%<br />
<hr />
<hr />
<h4>A little about this page</h4>
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 continuity
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 circumstances (for
example with multiplayer games or with them bidding against each other)
should the data they are entering be shared.<br /><br />
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.<br /><br />
This example has been put together by <a href=http://www.wellho.net/>Well
House Consultants</a> who provide
<a href=http://www.wellho.net/course/phfull.html>training courses in PHP</a>
to help you learn to make best and effective use of this technology. We
can be reached by email <a href=mailto:info@wellho.net>info@wellho.net</a>
or by phone - a UK number (44 international code) 01225 708225, or freephone
on 0800 043 8225.<br /><br />
Learn about this subject

Books covering this topic
Yes. We have over 700 books in our library. Books covering PHP are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "Designing PHP-Based Solutions: Best Practice" training module. You'll find a description of the topic and some other closely related examples on the "Designing PHP-Based Solutions: Best Practice" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

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This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

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