Observer and Strategy in PHP – behavioural patterns
Observer and Strategy are two of the most widely used behavioural patterns. Observer defines a publish-subscribe mechanism where subjects notify observers of state changes. Strategy defines a family of interchangeable algorithms. Both appear throughout Magento 2 – I show GoF implementations and the platform’s concrete use of each.
- Published in Wzorce projektowe
Adapter and Facade in PHP – structural patterns
Adapter and Facade are two structural patterns that manage complexity at the boundaries of a system. Adapter makes incompatible interfaces work together. Facade simplifies a complex subsystem behind a clean, high-level interface. Both appear constantly in real PHP projects – I show implementations and concrete examples from Magento 2.
- Published in Wzorce projektowe
Decorator and Proxy in PHP – structural patterns
Decorator and Proxy look similar at first glance – both wrap another object and implement the same interface. The intent is different. Decorator adds new behaviour. Proxy controls access. This post covers both structural patterns in depth, with PHP implementations, concrete use cases, and a comparison that clarifies when to reach for each one.
- Published in Wzorce projektowe
Singleton and Builder in PHP – creational patterns
Singleton and Builder are two more creational patterns from the GoF catalogue. Singleton is probably the most controversial – often misused, but legitimate in specific contexts. Builder shines when constructing complex objects with many optional parameters. I show both with PHP implementations, pitfalls, and practical examples.
- Published in Wzorce projektowe