{"product_id":"refactoring-legacy-php-a-practical-guide-to-modernizing-old-codebases-a-step-by-step-guide-to-refactoring-testing-upgrading-legacy-php-applicati-9798289210371","title":"Refactoring Legacy PHP: A Practical Guide to Modernizing Old Codebases: A Step-By-Step Guide To Refactoring, Testing, \u0026 Upgrading Legacy PHP Applicati","description":"\u003cp\u003e • Author(s): Phiquill Publishing\u003cbr\u003e • Publisher: Independently Published\u003cbr\u003e • Publisher Imprint: Independently Published\u003cbr\u003e • BISAC: Programming - General\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eWhat You Will Learn in This Book\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAccurately assess and diagnose legacy PHP codebases: \u003c\/b\u003e Understand what constitutes \"legacy,\" identify common pitfalls like unmaintained code and its business risks, and set realistic modernization goals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrepare your development environment for safe refactoring: \u003c\/b\u003e Master essential practices like version control with Git, establish stable local environments, and employ code archaeology techniques to understand unfamiliar systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIdentify and address various code smells in PHP: \u003c\/b\u003e Recognize specific anti-patterns such as global state abuse, spaghetti code, duplicated logic, and mixed HTML\/PHP, and utilize static analysis tools like PHPStan, Psalm, and PHPMD for automated detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImplement a robust testing strategy for untestable code: \u003c\/b\u003e Grasp the non-negotiable role of testing in legacy transformation, overcome challenges in testing tightly coupled code, introduce characterization tests, and set up testing frameworks like PHPUnit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApply core refactoring techniques incrementally and safely: \u003c\/b\u003e Execute fundamental refactorings like Extract Method, Extract Class, and Rename, and learn to transition procedural code towards object-oriented structures while safely restructuring data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWrite effective tests for existing and refactored PHP code: \u003c\/b\u003e Gain proficiency in PHPUnit, employ dependency injection and interfaces to make code testable, and utilize mocking and stubbing for isolated unit and integration testing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeverage design patterns to improve code robustness and flexibility: \u003c\/b\u003e Understand how to apply creational, structural, and behavioral patterns (e.g., Factory, Adapter, Strategy) to solve common design problems and refactor away anti-patterns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNavigate and execute PHP version upgrades strategically: \u003c\/b\u003e Comprehend the benefits of modern PHP, understand backward compatibility breaks, and utilize tools like Rector and PHP Compatibility Checker for smoother transitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrate modern PHP features into legacy projects: \u003c\/b\u003e Implement namespaces and Composer for autoloading, introduce strict types and scalar type declarations, and leverage modern OOP enhancements and improved error handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitecturally refactor monolithic PHP applications: \u003c\/b\u003e Decouple concerns using patterns like MVC, work with legacy databases, introduce API layers, and apply the Strangler Fig pattern for incremental system replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStrategically adopt modern PHP frameworks: \u003c\/b\u003e Evaluate the pros and cons of frameworks like Symfony or Laravel, understand when and how to incrementally integrate them into existing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTackle advanced legacy challenges effectively: \u003c\/b\u003e Systematically eradicate global state, introduce Composer to projects lacking dependency management, address common security vulnerabilities, and optimize performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCultivate a culture of continuous code quality and improvement: \u003c\/b\u003e Integrate static analysis into CI\/CD pipelines, monitor technical debt, balance pragmatism with perfectionism, and plan for the ongoing evolution of your codebase.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Independently Published","offers":[{"title":"Paperback","offer_id":47594869260439,"sku":"9798289210371","price":1463.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9798289210371.webp?v=1774987535","url":"https:\/\/atlanticbooks.com\/products\/refactoring-legacy-php-a-practical-guide-to-modernizing-old-codebases-a-step-by-step-guide-to-refactoring-testing-upgrading-legacy-php-applicati-9798289210371","provider":"Atlantic Books","version":"1.0","type":"link"}