Book Image

Zend Framework 2.0 by Example: Beginner's Guide

By : Krishna Shasankar V
Book Image

Zend Framework 2.0 by Example: Beginner's Guide

By: Krishna Shasankar V

Overview of this book

<p>ZF2 is the latest update to the well-known Zend Framework. This version has considerably eased the process of building complex web applications with minimal development effort using plug and play components. ZF2 also provides a highly robust and scalable framework for developing web applications.</p> <p>"Zend Framework 2.0 by Example: Beginner’s Guide" will guide you through the process of developing powerful web applications using ZF2. It covers all aspects of Zend Framework application development right from installation and configuration; the tasks are designed in a way that readers can easily understand and use them to build their own applications with ease.</p> <p>"Zend Framework 2.0 by Example: Beginner’s Guide" begins with the basic installation and configuration of the Zend Framework. As you progress through the exercises, you will become thoroughly acquainted with ZF2. With this book, you will learn about the basic concepts of building solid MVC web applications using Zend Framework 2.0. The detailed step-by-step instructions will enable you to build functionality such as a group chat, a file &amp; media sharing service, search, and a simple store to name a few. You will also use a wide range of external modules to implement features that are not natively available. By the end of the book, you will be well versed in building complex, functionality-rich web applications using Zend Framework 2.0.</p> <p>"Zend Framework 2.0 by Example: Beginner’s Guide" provides everything that you need for building functionality-rich web applications with simple real world examples and tasks.</p>
Table of Contents (18 chapters)
Zend Framework 2.0 by Example Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Zend\EventManager


Zend Framework 2 is an event-driven framework; the event manager allows you to attach events to almost any functionality. There are three main terms used in Zend Framework's event management, which are as follows:

  • Event manager: The EventManager object is the object that holds a collection of listeners and their relative events

  • Listener: The listener is the callback that reacts to the triggered event

  • Event: The event is the action that is triggered by the event manager

The event manager provides attach() and trigger() to create and trigger events respectively. Mostly we will be depending on MVC events for various operation, and the sequence of execution of MVC application events is described in the following diagram:

Tip

The article at the following link explains the sequence of events in a ZF2 application:

http://akrabat.com/zend-framework-2/a-list-of-zf2-events/

Flow of events for successful execution is as follows:

  1. Zend\Mvc\Application: Bootstrap

  2. Zend\Mvc\Application:...