Appendix A. Defining PSR-7 Classes
In this appendix, we will cover the following topics:
- Implementing PSR-7 value object classes
- Developing a PSR-7 Request class
- Defining a PSR-7 Response class
Introduction
PHP Standard Recommendation number 7 (PSR-7) defines a number of interfaces, but does not provide actual implementations. Accordingly, we need to define concrete code implementations in order to start creating custom middleware.
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