Introduction to PHP and Basic Syntax #1

Lesson 1: Introduction to PHP and Basic Syntax

1.1 What is PHP?

PHP stands for "Hypertext Preprocessor" and is a programming language commonly used for dynamic content generation of web pages. PHP is a server-side language and is usually embedded in HTML.

1.2 Your First PHP Program: "Hello World!"

Here is a simple "Hello World" program:

This program prints "Hello World!", a simple text displayed in the browser, on the screen.

1.3 Basic Syntax and Variables

• PHP code is case sensitive.
• Variables start with a $ sign.
• Comments are typed in double dashes // or /* */.

Defining a sample variable:

This program will produce an output of "Hello, John!".

1.4 Basic Data Types

PHP's basic data types are:

• String (Text): ‘"Hello World!"'
• Integer: ‘42’
• Float (Decimal Number): ‘3.14’
• Boolean (Logical): ‘true’ or 'false’

An example use of data types:

This program will output to the screen using different data types of variables.

This tutorial provided a quick introduction to the basic concepts of PHP. In future lessons, we will focus on topics such as conditional statements, loops, functions, etc. in more detail. If you have any questions or want to learn something else, feel free to ask!