In the Java framework, the difference between design patterns and architectural patterns is that design patterns define abstract solutions to common problems in software design, focusing on the interaction between classes and objects, such as factory patterns. Architectural patterns define the relationship between system structures and modules, focusing on the organization and interaction of system components, such as layered architecture.

TDD is used to write high-quality PHP code. The steps include: writing test cases, describing the expected functionality and making them fail. Write code so that only the test cases pass without excessive optimization or detailed design. After the test cases pass, optimize and refactor the code to improve readability, maintainability, and scalability.

The Guice framework applies a number of design patterns, including: Singleton pattern: ensuring that a class has only one instance through the @Singleton annotation. Factory method pattern: Create a factory method through the @Provides annotation and obtain the object instance during dependency injection. Strategy mode: Encapsulate the algorithm into different strategy classes and specify the specific strategy through the @Named annotation.

The decorator pattern is a structural design pattern that allows dynamic addition of object functionality without modifying the original class. It is implemented through the collaboration of abstract components, concrete components, abstract decorators and concrete decorators, and can flexibly expand class functions to meet changing needs. In this example, milk and mocha decorators are added to Espresso for a total price of $2.29, demonstrating the power of the decorator pattern in dynamically modifying the behavior of objects.

The SpringMVC framework uses the following design patterns: 1. Singleton mode: manages the Spring container; 2. Facade mode: coordinates controller, view and model interaction; 3. Strategy mode: selects a request handler based on the request; 4. Observer mode: publishes and listen for application events. These design patterns enhance the functionality and flexibility of SpringMVC, allowing developers to create efficient and maintainable applications.

The advantages of using design patterns in Java frameworks include: enhanced code readability, maintainability, and scalability. Disadvantages include complexity, performance overhead, and steep learning curve due to overuse. Practical case: Proxy mode is used to lazy load objects. Use design patterns wisely to take advantage of their advantages and minimize their disadvantages.

PHP design patterns provide known solutions to common problems in software development. Common pattern types include creational (such as factory method pattern), structural (such as decorator pattern) and behavioral (such as observer pattern). Design patterns are particularly useful when solving repetitive problems, improving maintainability, and promoting teamwork. In e-commerce systems, the observer pattern can realize automatic updates between shopping cart and order status. Overall, PHP design patterns are an important tool for creating robust, scalable, and maintainable applications.

TDD and design patterns improve code quality and maintainability. TDD ensures test coverage, improves maintainability, and improves code quality. Design patterns assist TDD through principles such as loose coupling and high cohesion, ensuring that tests cover all aspects of application behavior. It also improves maintainability and code quality through reusability, maintainability and more robust code.