## 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.

## How to Install, Uninstall & Remove phpMyAdmin – Ubuntu

How to install, uninstall and remove phpMyAdmin from Ubuntu. phpMyAdmin is a very popular MySql Administration tool used my million of developers.

## Find Common Elements in Two Arrays – Intersection of two Arrays

Given two sorted arrays, Write a code to find common elements in two arrays. In other words, we have to write a code to find the intersection of two arrays.

Let’s assume following two sorted arrays arr1[] and arr2[].

int arr1[] = {2,  3,  4,  5,  6};
int arr2[] = {4,  6,  7,  8,  9};

So the common elements in these two arrays is 4 and 6.

## Generate Prime Numbers between 1 to N – Sieve of Eratosthenes

Write an efficient program to generate prime numbers between 1 to N (Where N is 10, 100, 1000 etc). This question can also be asked like this, Generate prime numbers between 1 to 100 or 1 to 10 etc.

Suppose the value of N is 10, So the prime numbers between 1 to 10 is 2, 3, 5, 7.  Now let’s learn the most efficient algorithm (Sieve of Eratosthenes) to generate Prime Numbers between 1 to N. Before solving this program, let’s understand what is a prime number.

## MCQ on Data Structure – Stack and Queue

MCQ on stack and queue data structure. The concept of Stack and Queue data structure is very important in computer science. In my previous post i have discussed following things.

The purpose of this objective questions is to test how well you understand the concept of stack and queue.

## Linux Commands with Examples for Beginners

In this article, you will learn some of the most used Linux commands with examples . If you are new to Linux or Ubuntu operating system then all these commands are very helpful for you.

## Palindrome Program in PHP – Check Whether a Number is Palindrome or Not

Write a program to check whether a number is palindrome or not using php code. How to solve this problem.

## How to Reverse a Number in PHP

How to reverse a number using PHP code. This question is asked by one of our blog follower on webrewrite facebook page.  In this tutorial, We’ll learn how to reverse a number by creating our own custom method.