How to Install Composer on Mac OS

How to install composer on Mac OS.

What is Composer?

PHP Composer is a cross-platform dependency manager that allows you to manage package dependency in your project.

In my previous article, I have explained PHP Composer – how to manage package dependency in PHP through composer.

How to Install Composer on Mac OS

How to Install Composer on Mac OS

Factorial of a Number in PHP

Write a program to calculate factorial of a number in PHP. In this tutorial, We are going to write a PHP code to find factorial of a number using iterative as well as recursive approach. Before solving this problem let’s understand what is factorial.

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Program to Print Factorial of a Number in PHP

Program to Print Factorial of a Number in PHP

Program to Search an Element in an Array

Write a program to search an element in an array. Given a sorted array, how do you search an element in an array. Think for a moment how do you solve this problem.

You can use multiple approaches to find the solution of this problem. But try to solve this problem in minimum time complexity.

Find the Second Largest Number in an Array

Write a program to find the second largest number in an array. Given an unsorted array, we have to write a code to find the second largest number in an array. Also, we need to focus on time complexity. As the time complexity of an algorithm is very important in terms of an interview.

For example – Let’s take an array.

Input – arr[] = { 4, 1, 5, 2, 8, 0, 3, 55}

Output – 8

The second largest element in this array is 8.  Think for a moment, how do you find the second largest number in an array?  There are multiple ways to solve this problem. Which approach you prefer and why?

In this tutorial, we cover following things –

  • How to find the second largest number in an array using sorting.
  • C program to find the second largest number in an array.
  • C++ program to find the second largest number in an array.

Singleton Design Pattern in PHP

In this tutorial, You’ll going to learn what is singleton design pattern, Why and when to use this design pattern in your code.

Singleton Design Pattern

In Singleton Design Pattern, we ensure a class has only one instance and that instance can be accessed globally. The Singleton design pattern restricts the instantiation of a class to one object.

Singleton Design Pattern in PHP