InterviewPitch
Top C# QuestionsTake a Quiz

Land the job you want — prepare
with Real interviews Q&A

Curated interview questions, company-wise guides and coding rounds. Practice mock interviews, improve with feedback, and track your progress.

Start interview PrepExplore Topics
Q&A
Top curated interview packs
Company-wise & role-wise packs, quality assured.
Start a quiz
Instant scoring
All Interview Q&A
50 plus topics

PHP Interview Questions and Answers

This page provides a complete collection of PHP Interview Questions and Answers designed for PHP developers, backend developers, web developers, and candidates preparing for technical interviews.

PHP is a popular server-side scripting language used for building dynamic websites, web applications, APIs, and backend systems. It powers millions of websites and is widely used with frameworks like Laravel, Symfony, and CMS platforms such as WordPress.

This interview guide covers beginner, intermediate, and advanced PHP concepts including PHP syntax, variables, functions, OOP concepts, classes, inheritance, interfaces, traits, namespaces, exception handling, databases, MySQL, Laravel, security, and real-world development scenarios.

Difficulty
Beginner to Advanced
Topics Covered
PHP, OOP, Laravel, MySQL
Examples
PHP Coding Examples
Updated
July 2026

Why Learn PHP?

PHP remains one of the most widely used backend programming languages for web development. It provides simple syntax, strong database integration, and a large ecosystem of frameworks and tools.

Companies hire PHP developers who understand object-oriented programming, database operations, API development, security practices, and modern frameworks like Laravel.

Topics Covered in PHP Interview Questions

  • PHP Fundamentals
  • PHP Syntax and Variables
  • Data Types
  • Operators
  • Functions in PHP
  • Arrays and Strings
  • Object Oriented Programming
  • Classes and Objects
  • Inheritance and Interfaces
  • Traits and Namespaces
  • MySQL Integration
  • Laravel Framework
Beginner
1. What is PHP?
PHP is a server-side scripting language used to build dynamic web applications.
Beginner
2. What does PHP stand for?
PHP stands for Hypertext Preprocessor.
Beginner
3. Is PHP case-sensitive?
Variables are case-sensitive, functions and keywords are not.
Beginner
4. What are PHP variables?
Variables store data and start with $ symbol.
Beginner
5. Difference between echo and print?
echo is faster and supports multiple parameters,print returns a value.
Beginner
6. What is array in PHP?
Array stores multiple values in a single variable.
Beginner
7. What is associative array?
Array with named keys instead of numeric indexes.
Beginner
8. What is session?
Session stores user data across multiple pages.
Beginner
9. What is cookie?
Cookie stores data on the client browser.
Beginner
10. GET vs POST?
GET sends data in URL,POST sends data securely in request body.
Intermediate
16. What is PDO?
PDO provides a secure way to access databases using prepared statements.
Intermediate
17. What is prepared statement?
Prevents SQL Injection by separating query and data.
Intermediate
18. What is include vs require?
require stops script on failure,include only gives warning.
Intermediate
19. What is error handling in PHP?
Using try-catch, error_reporting, and custom handlers.
Intermediate
20. What is OOP in PHP?
Object-Oriented Programming using classNamees and objects.
Intermediate
21. What are PHP magic methods?
Methods starting with __ like __construct(), __destruct().
Intermediate
22. What is namespace?
Used to avoid className name conflicts.
Intermediate
23. What is autoloading?
Automatically loads className files when needed.
Intermediate
24. What is MVC?
Model–View–Controller architecture pattern.
Intermediate
25. What is Laravel?
A popular PHP framework for web applications.
Advanced
31. What is dependency injection?
Injecting dependencies instead of creating them internally.
Advanced
32. What is middleware?
Filters HTTP requests before reaching controller.
Advanced
33. What is REST API?
Architecture for building stateless web services.
Advanced
34. How to prevent SQL Injection?
Use prepared statements and parameter binding.
Advanced
35. What is Composer?
Dependency manager for PHP.
Coding Round
41. Reverse a string
strrev("hello");
Coding Round
42. Check palindrome
$str == strrev($str)
Coding Round
43. Find factorial
Answer Here
Coding Round
44. Count array elements
array_count_values($arr);
Coding Round
45. Remove duplicates
array_unique($arr);
Coding Round
46. Database connection
$pdo = new PDO("mysql:host=localhost;dbname=db","user","pass");
Coding Round
47. Sort array
sort($arr);
Coding Round
48. Explode string
explode(",", $str);
Coding Round
49. Implode array
implode("-", $arr);
Coding Round
50. Check variable type
gettype($var);

Continue Your Web Development Interview Preparation

PHP interviews often include questions related to backend development, databases, APIs, JavaScript, frontend technologies, frameworks, and software architecture. Preparing related technologies helps improve technical interview performance.

JavaScript Interview Questions
SQL Interview Questions
Laravel Interview Questions
HTML Interview Questions

Why Learn PHP for Web Development?

PHP provides powerful features for server-side development including database connectivity, session management, authentication, and API development.

Modern PHP development with frameworks like Laravel enables developers to build scalable web applications using clean architecture and best development practices.

Recommended PHP Learning Path

  • PHP Basics
  • Variables and Data Types
  • Functions
  • Arrays
  • Forms Handling
  • Object Oriented PHP
  • Database Programming
  • MySQL Integration
  • REST API Development
  • Laravel Framework
  • Security Practices
  • Real-Time PHP Projects

Tips to Crack PHP Interviews

During PHP interviews, candidates should understand core PHP concepts, object-oriented programming, database operations, security practices, and framework-based development.

Practice building small PHP applications involving authentication, CRUD operations, APIs, and database integration to gain practical experience.

About This PHP Interview Guide

This PHP Interview Questions and Answers guide is created to help beginners, PHP developers, and experienced professionals prepare for backend and web development interviews.

The guide covers PHP fundamentals, advanced concepts, database programming, frameworks, and practical development scenarios required for modern web development roles.