PHP - Lesson-1 Variables

Learn PHP Article

Learn PHP Basics

Introduction

What is PHP? PHP (Hypertext Preprocessor) is an open-source server-side scripting language mainly used for web development. PHP code is executed on the server, and the result is sent to the browser as plain HTML.

Unlike HTML, PHP can:

  1. Connect to databases
  2. Handle forms
  3. Manage sessions
  4. Control user access

Example: Hello World

The simplest PHP script prints text to the browser. Here’s how you can write a "Hello World" program:

<?php
echo "Hello, World!";
?>
💡 Tip: Always start PHP code with <?php and end with ?>.

Variables in PHP

Variables in PHP start with a dollar sign ($). They can store strings, numbers, or other data types.

<?php
$name = "Alice";
$age = 25;
echo "My name is $name and I am $age years old.";
?>

Data Types in PHP

Like every programming language, PHP also uses data types to define the kind of data a variable can hold. In many languages, understanding data types may feel difficult or unnecessary for beginners. However, PHP data types are easy to understand, and working with them is very simple because PHP is a dynamical written language.

In PHP, you do not need to declare a data type explicitly. The data type is automatically determined based on the value assigned to the variable. This feature makes PHP beginner-friendly and reduces complexity while coding.

<?php
$number = 10; // Integer
$price = 99.50; // Float
$text = "PHP"; // String
$status = true; // Boolean
;
?>

Popular posts from this blog

TRAINING AND DEVELOPMENT

  TRAINING AND DEVELOPMENT : Training and Development means training the employees and develop their skills to carryout the assigned job.  Every Organization must have a Training Department to look after the training needs of the Organization's employees.  This Training Department will oversee the training needs of an Organization.  In order to impart training to the newly joined employees upon joining in an Organization they will be handed over to the Training and Development Department where the training of the newly joined training are being undertaken.  The Training Manager will provide the schedule of training to the new joiner and they will be trained in the Training Department itself but for learning the job they will be sent to the concerned Department where the employee likely to join his regular duties in future.  Also they will be sent to other Departments also during the training period for learning the culture of the Organization and ...
Read more

Contracts in Organizations

Awarding Contracts : How to define a Contract: A contract  simply means the process of entering into an agreement in writing to provide services for a specified period of time say one or two years or supply of items or manpower for a specified period under mutually agreed terms and conditions between two parties forming the agreement between Contractor and Contractee.   Essentials of a Contrat: A Contract needs the following : 01. A Person or a Contractee who is in need of hiring a contractor. 02. A Contractor, who agrees to the contract or provider of a service 03. A valid Agreement, Offer, and Acceptance of the Offer.  04. Interest, the parties to the contract show some inclination or interest in contracting with the other party. 05. Purpose, there should be a purpose or services. 06. Making the Offer and Acceptance of the Offer. 07. Mutual Agreement to the Offer. 08. Time Period, the agreement will be entered into between parties to the contract for a specified ti...
Read more

ORGANIZATIONAL DEVELOPMENT

A well formed and nurtured Organization is in need of minimum manpower to run the business of the Organization. Whether the organization is setup for social purpose or not, for the conduct of the daily routine jobs manpower with some good caliber is required.  When a candidate join the Organization as its employee to cater to the needs of carrying out these jobs may or may not have sufficient work experience of working in any other organizations. But to bring them to the natural work flow these new joiners are to be trained with regard to the Organization's culture and values.  These culture and values are to be inculcated into the employees worth.   Every Organization is setup with a motive of making profit in normal case there may be exceptions when we consider the Social Organizations which will make up the society's face value.  Social Organizations are set up with an objective of implementing welfare schemes among the residents of a particular area, vi...
Read more