单身人士还是静态？ 最好的做法对于PHP？

Question

I built small mvc structure and I also created small basic Dependency Invoker based on Reflection class. My question is which one is best practice for using dependent class. For example I have class Call Request and I will use .

public function method(Request $request);

My Question is how to load Request class

1. Using Singleton and non static class var

   class Request{
   protected $var;
   }
   

2. Using New Instance with Static Var

   class Request{
   protected static $var;
   }
   

Answer 1

The choice between a singleton pattern and a "new instance with static" doesn't really resolves the dependency injection question.

However I suggest you to use the singleton design pattern to access your Request object.

Why ?

• This pattern fits your needs, it respects the "one and unique object instance" for your Request class.
• Developers should be aware of this structure, that's a proof of sustainability.
• Encapsulation
• Design patterns are 99% "best pratices"

And the dependency injection ?

From my experience, I suggest you to take a look at the factory design pattern.
You'll centralize the creation of your objects and the dependencies injection will be a lot easier and cleaner.

Of course, this is only my way to code, I don't pretend to have the best practices and this should be discussable.

Hope this will help you.