Many businesses and organizations depend on older high-value PHP software that risks abandonment because it is impossible to maintain. The reasons for this may be that the software is not well designed; there is only one developer (the one who created the system) who can develop it because he didnt use common design patterns and documentation; or the code is procedural, not object-oriented. With this book, youll learn to identify problem code and refactor it to create more effective applications using test-driven design. What youll learn What refactoring is and why you need to refactor code What test-driven design is and why you need to test your code How to write unit and functional tests with PHPUnit and Selenium Remote Control (RC) How to detect bad smells in PHP code, and refactor them using test-driven design How to refactor a large procedural application affected by many bad smells Who this book is for This book is for PHP developers, businesses, and developers relying on legacy PHP apps. Table of Contents Introduction Finding Bad Smells in Code Introduction to Refactoring Principles and Rules Test-First Development Refactoring Tools Structuring Behavior Changing Class Responsibilities Dealing with Data Rationalization Reducing to Essential Conditional Executions Simplifying Method Calls Simplifying Generalization Relationships Legacy Code Regression Tests Refactoring with Patterns