Flight vs Zend Framework

Since Flight uses static methods, it does not require for the application class to be instantiated.

Flight is open source and is released under the MIT license.

A unique feature of Flight is something that the author calls filters. Filters are functions which can be executed before and after any other function and can change the parameters and the output of said function.

This feature is used instead of hooks which in other frameworks are used to execute code into different parts of the application's life-cycle.

Zend is the most used PHP framework by big businesses. Zend is widely used and tested by a large number of banks, as well as companies, such as Allied Beverage, BBC, Shaklee, CarinBridge, BNP Paribas and more.

Partnered with Google, IBM, Adobe, Microsoft

Zend has a large library of predefined classes with which developers can create maintainable and stable web applications. This is done if the developer works within the constraints and with the components of these different predefined classes, which makes the application more maintainable.

Zend supports almost all kinds of databases out there. From MySQL, IBM DB2, Oracle, Microsoft SQL Server to PostgreSQL.

For developpers not used to Zend, they can use a predefined structure and use preloaded components and classes to build and maintain their application. But for advanced developpers, they can customize the structure to stick to their needs (or their likings) and extend primary Zend components for fine-tuned apps or replace the initial predefined Zend components by third parties components such as Doctrine ORM or another logging or templating framework.

Apigility is a collection of Zend Framework modules. It's useful for building the API architecture of a web app quickly and painlessly by providing a flexible engine.

Apigility also has a web-based UI that allows developers to quickly create and modify API services, configure authentication, set authorization rules, set up validation and write new documents.