PHP design mode

1. Factory mode
   

Unify the creation and return of the object (instance) of the class.

2. Single case

Avoid instantiating objects multiple times in one life cycle

3. Strategy

All policies implement a unified interface, depending on the scenario, using different objects, choose different strategies.

4. Agent

Wake-up to the business implementation of encapsulation, direct use, do not pay attention to details.

5. The viewer

When an event occurs when an event is called, the business logic of a series of observers is triggered in the event, and the observer can be dynamically added to the event person

6. Decorative Device

To one object of a business to add a different decoration, different decorations to achieve a unified decorative interface, in the object business unified implementation of all the decoration business.

7. Registrar

Accessing an instance of an object

8. Iterators

SPL Iterater

This article is from the "Jinghong" blog, please be sure to keep this source http://haocaige.blog.51cto.com/1319521/1606996

PHP design mode