A structured guide to learning OOP in PHP: concepts before syntax

A tutorial published on DEV Community outlines a six-step approach to learning object-oriented programming (OOP) in PHP, targeting developers already familiar with procedural PHP. The guide argues that the most common mistake learners make is studying PHP syntax before understanding core OOP concepts such as encapsulation, inheritance, and polymorphism. It recommends first grasping these language-agnostic principles before applying them through PHP-specific syntax. The six steps progress from classes and objects through to namespaces and PSR-4 autoloading with Composer, with each stage building on the previous one. The article emphasizes that understanding the keyword 'this' and visibility modifiers like private and public is foundational before advancing further.