PHP Interview: 200 Questions and Answers

The book "PHP Interview: 200 Questions and Answers" is a comprehensive practical guide for anyone preparing for a technical interview for a PHP developer position. The author has collected and structured the most common and challenging questions asked in interviews at IT companies of various levels — from startups to large corporations.

The material covers all key topics:

• PHP Basics — data types, operators, control structures, working with arrays and strings, functions, and variable scope.
• Object-Oriented Programming (OOP) — classes, inheritance, polymorphism, encapsulation, interfaces, traits, late static binding.
• Working with Databases — MySQL, PDO, ORM, query optimization, indexes, transactions, JOINs, and subqueries.
• Frameworks and Architecture — Laravel, Symfony, MVC, DI containers, service providers, migrations, validation.
• Security — SQL injection, XSS, CSRF, session protection, encryption, and password hashing.
• Tools and Infrastructure — Composer, Git, Docker, CI/CD, testing (PHPUnit), profiling, and debugging.
• Algorithms and Data Structures — logic problems, sorting, searching, working with trees and graphs.

The book is intended for:

• Junior developers who want to confidently pass their first interview.
• Middle developers seeking to systematize their knowledge and fill gaps.
• Senior developers preparing for a team lead or architect role.
• HR and technical recruiters wanting to understand what questions to ask candidates.

Each question is accompanied by a detailed, comprehensive answer with code examples, explanations, and references to best practices. At the end of the book, you will find tips on interview behavior, common mistakes, and recommendations for further learning.

After reading this book, you will be able to:

• Confidently answer any questions about PHP and related technologies.
• Understand what exactly the interviewer is testing with each question.
• Solve practical problems under time constraints.
• Raise your level to Middle and above.

"PHP Interview: 200 Questions and Answers" is not just a collection of questions, but a full-fledged training tool that will help you turn interview stress into a confident dialogue between professionals.