The PHP Framework has been developed for PHP 4.0.5 or greater. It provides a structure to the code and enables the developers to write code with ease as well as allowing for easy maintenance and understading.  It also provides for easier programming by converting complex functions into simple instructions.  In general the application is divided in three layers: 

• Presentation logic which administers the interactions between the user and the software.
• Data Logic which allows a storage agent and others access to the system.
• Domain or business logic, which manages the data models according to the commands received from the presentation.

PHP is known for its simplicity and is widely used in this field.  PHP can utlize virtually any database engine, session adminstrator, server file access, etc.  When applications grow and their complexity increases, the framework resolves may issues and facilitates many tasks based on the following concepts:

• Compatible with many platforms
• Easy to install and configure
• Easy to learn
• Ready for many commercial applications
• Simple in the majority of cases but flexible to adapt to more complex environments
• Supports many features of current web applications
• Ability to produce applications that are easy to maintain
• Flexibility in the presentation and visual design