Call by Value & Call by Reference in PHP with Example

What’s the difference between call by value & call by reference in PHP? This is the most important concept used in programming and sometime asked in interviews. Don’t worry if you are new to this terminology, you’ll learn this concept in this tutorial.

Swap Two Numbers using Call by Reference in C

How to swap two numbers using call by reference in C , C++. In the interviews interviewer generally asked the difference between call by reference and call by value. In this post let’s understand what is call by reference and how to swap two numbers using call by reference method.