Learning PHP Design Patterns
Format: PDF / Kindle (mobi) / ePub
Build server-side applications more efficiently—and improve your PHP programming skills in the process—by learning how to use design patterns in your code. This book shows you how to apply several object-oriented patterns through simple examples, and demonstrates many of them in full-fledged working applications.
Learn how these reusable patterns help you solve complex problems, organize object-oriented code, and revise a big project by only changing small parts. With Learning PHP Design Patterns, you’ll learn how to adopt a more sophisticated programming style and dramatically reduce development time.
- Learn design pattern concepts, including how to select patterns to handle specific problems
- Get an overview of object-oriented programming concepts such as composition, encapsulation, polymorphism, and inheritance
- Apply creational design patterns to create pages dynamically, using a factory method instead of direct instantiation
- Make changes to existing objects or structure without having to change the original code, using structural design patterns
- Use behavioral patterns to help objects work together to perform tasks
- Interact with MySQL, using behavioral patterns such as Proxy and Chain of Responsibility
- Explore ways to use PHP’s built-in design pattern interfaces
Entry Modules The Client Calls for Help The Minor but Major Change in Context Class The Concrete Strategies The Flexible Strategy Pattern 239 240 241 242 242 244 247 248 251 251 254 254 256 261 262 263 269 13. The Chain of Responsibility Design Pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 Passing the Buck The Chain of Responsibility in a MySQL Help Desk Building and Loading the Response Table The Help Desk Chain of Responsibility Automated Chain of.
Reads the ambient temperature. It doesn’t matter where or how the values are generated; that’s the business of the model. The presentation part of the MVC has two elements: the view and controller. The view, in the thermostat example, is a window that shows the temperature and settings to the viewer. The model provides the ambient temperature, and the controller provides the on/off temperature sent to the view for display. The controller is the device that adjusts the on/off values. (The view.
Altogether. Clients make requests from the main program, and the arrows help to show the different relations between the Cli ent and the main part of the program. Often, programmers use the name “main” to indicate the client, but with design patterns, the “main” terminology is misleading. The main part of the program is in the interrelated participants and not the client. Figure 4-2 is the same pattern minus the pseudocode annotations to provide a clearer focus on the fundamental elements in the.
With teams. When dealing with larger and more complex programs, teams need to agree on and understand a common plan and goal to effectively and efficiently create and maintain large programs. Among other things, OOP and design patterns provide a common language to speed along group work. References to “factories,” “state machines,” and “observers” all mean the same thing to those who understand OOP and design patterns. Most importantly, design patterns provide a way of programming so that a team.
Of programmers can work on separate parts that will go together. Think of an assembly line making automobiles—each team assembles a different part of the car. To do that, they need a pattern of development and an understanding of the relationship of one part to another. In this way, everyone can do their job knowing that someone else’s job will fit with their work. They don’t have to know the details of another worker’s job. They just need to know that they’re working from the same plan. What’s.