Front-End Developer / PHP Developer interviews Questions Answer 2025

PHP developer interviews questions answer 2025, online professional course in India, be ready to crack interview, technology related questions answers, most important questions answers for job front end developers.

💻 HTML Interview Questions

1. What is the difference between <div> and <span>?

   • <div> → block-level element

   • <span> → inline element
     👉 Used for layout vs. inline styling.

2. What is the difference between id and class attributes?

   • id → unique, used once

   • class → can be reused multiple times

3. What are semantic HTML tags?

   • Tags that describe their meaning: <header>, <footer>, <article>, <section>

4. What is the difference between <strong> and <b>?

   • <strong> has semantic meaning (important text)

   • <b> only makes text bold

php developer interviews questions answer 2025

🎨 CSS Interview Questions

1. What are the different types of CSS?

   • Inline, Internal, External

2. What is the difference between relative, absolute, and fixed positioning?

3. What are CSS flexbox and grid used for?

   • Layout alignment and responsive design.

4. How do you make a website responsive?

   • Using media queries, flexible units (%, vh, vw), flexbox/grid.

5. Explain CSS specificity.

   • Inline > ID > Class > Element

⚡ JavaScript Interview Questions

1. Difference between var, let, and const

   • var: function-scoped

   • let & const: block-scoped

   • const: value cannot be reassigned

2. What are closures in JavaScript?

   • A function that remembers variables from its outer scope even after the outer function has finished executing.

3. What is DOM manipulation?

   • Using JavaScript to change HTML content and structure dynamically.

4. Explain event bubbling and capturing.

5. Difference between synchronous and asynchronous programming.

6. What are Promises and async/await?

   • Used to handle asynchronous code (e.g. API calls).

7. How do you call a REST API using JavaScript?

   fetch('https://api.example.com/data')
.then(res => res.json())
.then(data => console.log(data));


php developer interviews questions answer 2025

🐘 PHP Developer Interview Questions

1. What is PHP?

   • PHP is a server-side scripting language used to create dynamic web pages.

2. Difference between include() and require()

   • require() stops script execution on error; include() just gives a warning.

3. What are superglobals in PHP?

   • Built-in variables like $_GET, $_POST, $_SESSION, $_COOKIE, $_SERVER.

4. What is the difference between GET and POST?

   • GET: data in URL, less secure.

   • POST: data in request body, more secure.

5. How to connect PHP with MySQL database?

   $conn = new mysqli("localhost", "username", "password", "database");


6. What is a prepared statement and why use it?

   • Prevents SQL Injection attacks.

7. Explain sessions and cookies.

   • Session: stored on server.

   • Cookie: stored on client browser.

8. What is MVC in PHP?

   • Model (data), View (UI), Controller (logic) separation for better maintainability.

🧩 Database (MySQL) Questions

1. What is normalization?

   • Process of organizing tables to reduce redundancy.

2. Difference between INNER JOIN and LEFT JOIN.

3. What is indexing and why is it important?

   • Improves query performance by making searches faster.

4. How do you prevent SQL Injection?

   • Use prepared statements and parameterized queries.

php developer interviews questions answer 2025

🧠 Practical / Scenario-Based Questions

1. Build a Login System using PHP and MySQL.

   • Validate credentials → start session → redirect to dashboard.

2. How would you validate a form (client + server side)?

   • Client: JS

   • Server: PHP validation

3. How would you optimize a website’s performance?

   • Minify CSS/JS, use caching, compress images, lazy loading.

4. How would you handle errors in PHP?

   • Using try...catch, error_reporting(), set_error_handler().

php developer interviews questions answer 2025

💬 HR / Soft Skills Questions

1. Tell me about yourself.

2. Why do you want to work as a Front-End/PHP Developer?

3. Tell us about a project you built.

4. What challenges did you face and how did you solve them?

5. Where do you see yourself in 3 years?