PHP, which stands for “Hypertext Preprocessor,” is one of the most widely used scripting languages for web development. Since its inception in 1994, PHP has undergone significant evolution, transforming from a simple set of tools for creating personal home pages to a robust, full-fledged programming language that powers millions of websites and applications today. This article explores the key versions of PHP, highlighting how each iteration has influenced the landscape of web development services, with real-world examples and case studies.