Master PHP exception handling — try-catch-finally, custom exception classes, global error handlers, and production-safe error logging.
Master Laravel Eloquent — all relationship types, solving the N+1 query problem with eager loading, scopes, mutators and advanced query builder.
Master the most important PHP design patterns — Singleton, Factory, Observer, Strategy, Decorator, and Repository with complete code examples.
Learn Composer from scratch — installing packages, PSR-4 autoloading, version constraints, and composer.lock for reproducible builds.
Learn how PHP sessions and cookies work under the hood, how to configure them securely, prevent session fixation and hijacking attacks.
Master PHP array functions — array_map, filter, reduce, usort, array_walk and more with real code examples and interview tips.
