Zend Framework is based on simplicity, object-oriented best practices $5/month
We offer the best feature on the market
Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase. Zend Framework is focused on building more secure, reliable, and modern Web 2.0 applications and web services, and consuming widely available APIs from leading vendors like Google, Amazon, Yahoo!, Flickr, as well as API providers and cataloguers like StrikeIron and ProgrammableWeb.
Zend is a PHP framework that is made to be simple to use (once you get the hang of it), yet still powerful enough to be helpful on just about any project. It is one of the more popular and better known frameworks for PHP, and is used on millions of different projects. It can help developers build modern Web 2.0 properties that are secure, reliable, and easy to use for visitors. In fact, Zend states that they have been installed over 95 million times, though this would include updates and things like that.
The framework itself is very reliable and largely built with corporate or commercial users in mind. To help make this a great solution for those who need top of the line frameworks, they have done a great job at securing the code and testing it in a wide range of environments to help ensure it will work perfectly on any project.