PHP Interview Questions and Answers
PHP Interview Questions and Answers
Preparing for interviews is an important step to start your career in backend development using PHP. This lesson covers commonly asked PHP interview questions with clear answers.
Basic PHP Interview Questions
What is PHP
PHP is a server-side scripting language used to build dynamic web applications.
What are variables in PHP
Variables are used to store data and always start with a $ symbol.
What is echo in PHP
echo is used to display output on the screen.
What are data types in PHP
Common data types include string, integer, float, boolean, array, and NULL.
Intermediate PHP Interview Questions
What is the difference between GET and POST
GET sends data through URL, while POST sends data in request body.
What is a session in PHP
A session stores user data across multiple pages.
What is an array in PHP
An array stores multiple values in a single variable.
What is OOP in PHP
Object-Oriented Programming is a way to structure code using classes and objects.
Advanced PHP Interview Questions
What is SQL injection
It is a security vulnerability where malicious SQL code is inserted into queries.
What are prepared statements
They are used to execute secure SQL queries and prevent SQL injection.
What is MVC architecture
It separates application logic into Model, View, and Controller.
What is Composer in PHP
Composer is a dependency management tool for PHP.
Practical Coding Questions
Write a PHP program to check even or odd
$num = 10;
if ($num % 2 == 0) {
echo “Even”;
} else {
echo “Odd”;
}
?>
Write a PHP function to add two numbers
function add($a, $b) {
return $a + $b;
}
echo add(5, 3);
?>
Tips to Crack PHP Interviews
Understand Basics Clearly
Focus on core concepts like variables, loops, and functions.
Practice Coding
Solve problems and build projects.
Learn Real-World Concepts
Understand security, sessions, and database integration.
Be Confident
Explain your logic clearly during interviews.
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FAQs – PHP Interview Questions
What are important PHP topics for interviews
Variables, functions, OOP, sessions, and database connectivity.
Is PHP good for career
Yes, it is widely used in web development.
What is the best way to prepare
Practice coding and build projects.
Are projects important for interviews
Yes, they show practical knowledge.
How to improve PHP skills
Practice regularly and work on real projects.