PHP Security Refactoring: Securing CRUD Applications

Writing functional code is only half the battle; ensuring your web applications are safe from common exploits is what defines a professional developer. This text-based course guides you through the process of analyzing, refactoring, and verifying security features in a standard PHP CRUD application. You will begin by learning foundational security concepts and identifying common vulnerabilities like SQL injection and Cross-Site Scripting (XSS). Through clear written explanations and practical code examples, you will transform vulnerable legacy patterns into robust, secure code. What you'll learn: - Learn the essential security terminology and core concepts of web application defense. - Master HTML escaping and sanitization techniques to eliminate XSS risks. - Practice refactoring database queries using secure prepared statements. - Apply robust input validation and duplicate entry prevention logic. - Understand how modern PHP features like strict type hinting improve overall code security. - Verify your changes using structured testing and code review principles. The course begins with critical terminology and basic security concepts before walking you through the step-by-step refactoring of a live database-driven application. It is designed for beginner PHP developers who want to transition from writing basic scripts to building secure, production-ready web applications. Step up your development skills and start writing secure PHP code today.