PSR-4

PSR-4 is an autoloading standard used in PHP programming that helps automatically load classes from files. It defines a straightforward way to organize your code: namespaces correspond to folder structures, and class names map to specific files. When you use a class in your code, PSR-4 guides the system to locate and include the correct file without manual effort. This promotes cleaner project organization, easier maintenance, and efficient code loading, especially in larger applications.