A software framework is an abstraction in which software providing generic functionality can be selectively changed by additional user-written code, thus providing application-specific software.

1. A software framework is an abstraction in which software providing
generic functionality can be selectively changed by additional
user-written code, thus providing application-specific software.
A software framework is a universal, reusable software platform to
develop applications, products and solutions which includes support
programs, compilers, code libraries, tool sets, and application
programming interfaces (APIs) that bring together all the different
components to enable development of a project or solution.
Advanced PHP web development Framework

2. Modern dynamic web development is using various web frameworks due
to many of its advantages. We have listed Advanced PHP Development
solutions of a number of selected frameworks such as Zend, Codeigniter
and Cake PHP. All the frameworks we selected are written in PHP
Scripting language and supporting all major databases, especially
MySQL.
All of these frameworks are following the MVC (Model View Controller)
Architecture and is one of the important points which we need to
consider while choosing a framework.
All of these frameworks are addressing the common features needed for
any kinds of web development. This includes database management,
Session Management, MVC Architecture, Object Oriented Programming
(OOP), Code Reusing, Caching, Security, Ajax, Web Services, SEO
Friendly URLs etc. These frameworks provide libraries for handling all
common actions for the Web Development.
Our recommendations: Zend, Codeigniter and CakePHP

3. Zend is an Open source Web Application framework written in PHP 5. It
uses the MVC Architecture and is one of the widely using frameworks.
Zend is provided by Zend Technologies, The PHP Company.
It has completed Five Medium to Big projects using Zend Framework.
The Team Members are well experienced in providing Zend Framework
development solutions.
Codeigniter is an Open source framework written in MVC Architecture.
This is developed by EllisLab. Codeigniter is very simple and is now
considered as the starting point of studying a Web Application framework
in PHP.
Professionals are using Codeigniter since 2009. Our professionals can
provide good quality work with minimal development time using
Codeigniter.
CakePHP is an Open source framework written in PHP using MVC
Architecture. Our Team Members are good in providing dynamic web
development using CakePHP.
CakePHP uses well-known software engineering concepts and software
design patterns, as Convention over configuration,
Model-View-Controller, ActiveRecord, Association Data Mapping and
Front Controller.
Conclusion:
In most of the cases, frameworks bring a helping hand to any project.
But as with any tool, how much they can help very much depends on the

4. circumstances.
If your site involves more content, Drupal or WordPress may be a better
fit. If you’re building the next Twitter to launch ASAP, CodeIgniter or
CakePHP would be good choices. If your environment is corporate, then
Zend may suit better.
Finally – if you feel you need to create a bespoke framework, then hire
PHP developer in India.
Get cracking: it’s actually quite fun!
Source:
http://www.behance.net/gallery/Advanced-PHP-Web-Develop
ment-Frameworks/10214433