PHP Design Patterns

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PHP is a popular server-side scripting language used for web development. Design patterns are solutions to common software development problems. By using design patterns, developers can create more modular, reusable, and maintainable code.

Here are some commonly used PHP design patterns:

  1. Singleton Pattern: This pattern ensures that a class has only one instance, and provides a global point of access to it.
  2. Factory Pattern: This pattern creates objects without exposing the creation logic to the client and refers to the newly created object through a common interface.
  3. Adapter Pattern: This pattern allows the interface of an existing class to be used as another interface. It is often used to make incompatible classes work together.
  4. Observer Pattern: This pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.
  5. Decorator Pattern: This pattern adds new functionality to an existing object without altering its structure. It involves creating a decorator class that wraps around the original class.
  6. Strategy Pattern: This pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. It allows the algorithm to vary independently from clients that use it.
  7. Command Pattern: This pattern encapsulates a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations.
  8. Template Method Pattern: This pattern defines the skeleton of an algorithm in a method, deferring some steps to subclasses. It allows subclasses to redefine certain steps of an algorithm without changing its structure.

These are just a few examples of the many design patterns that can be used in PHP development. By understanding and applying these patterns, developers can write more efficient, scalable, and maintainable code.

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