Quick Answer
Namespaces prevent name collisions between classes, functions, and constants from different libraries. namespace App\\Models; declares the namespace. Use other namespaces: use App\\Services\\UserService;. Access without use: new App\\Models\\User(). PHP files with the same class name can coexist in different namespaces. Required for Composer autoloading and modern OOP PHP development.
Answer
Namespaces avoid naming conflicts and organize large applications by grouping related classes.
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Verified Answer
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