A PHP framework can help you to develop web application faster, and it used by many company around the world. Here a list of php framework that avaliable and downloadable, I copy the sort explanation about the framework, you can go to the official site to learn more, so here it goes :
CodeIgniter is a powerful PHP framework with a very small footprint, built for PHP coders who need a simple and elegant toolkit to create full-featured web applications. If you™re a developer who lives in the real world of shared hosting accounts and clients with deadlines, and if you™re tired of ponderously large and thoroughly undocumented frameworks.
more on … http://codeigniter.com
CakePHP is a rapid development framework for PHP that provides an extensible architecture for developing, maintaining, and deploying applications. Using commonly known design patterns like MVC and ORM within the convention over configuration paradigm, CakePHP reduces development costs and helps developers write less code.
more on … http://cakephp.org
3. Zend Framework
Extending the art & spirit of PHP, Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase.
more on … http://framework.zend.com
Symfony is a full-stack framework, a library of cohesive classes written in PHP. It provides an architecture, components and tools for developers to build complex web applications faster. Choosing symfony allows you to release your applications earlier, host and scale them without problem, and maintain them over time with no surprise.
more on … http://www.symfony-project.org