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What are superglobals in PHP? List some examples.

August 15, 2025

In PHP, superglobals are built-in variables that are always accessible, regardless of scope—meaning you can access them inside functions, classes,...

Explain the difference between unset() and null and unlike()

August 15, 2025

You asked about unset(), null, and unlink() in PHP. Let’s go careful step by step because they are often confused....

How does PHP handle sessions and cookies?

August 15, 2025

PHP handles sessions and cookies to manage state in web applications, but they work differently. Let’s break it down carefully:...

What are the differences between include, require, include_once, and require_once?

August 15, 2025

In PHP, include, require, include_once, and require_once are all used to include and evaluate files, but they behave differently in...

Explain the difference between echo, print, print_r(), and var_dump().

August 15, 2025

In PHP, echo, print, print_r(), and var_dump() are all used to output data, but they serve different purposes and behave...

Explain the Singleton design pattern in PHP.

August 15, 2025

The Singleton Design Pattern in PHP is a creational pattern that ensures: This is useful when you want a single...

How do you implement dependency injection in PHP?

August 15, 2025

Dependency Injection (DI) in PHP is a design pattern where you pass an object’s dependencies from the outside instead of...

What is the difference between get() and set()?

August 15, 2025

In PHP, __get() and __set() are magic methods used for overloading properties — meaning they let you access or assign...

How do traits work in PHP? Why are they needed?

August 15, 2025

In PHP, traits are a mechanism for code reuse that lets you share methods between multiple unrelated classes without using...

What is Final Class and Final Method in php

August 15, 2025

In PHP, final is a keyword used in OOP to prevent further modification of classes or methods. 1. Final Class...