Learn the fundamentals of PHP from structural programming to object-oriented techniques.

Web Development with PHP

This highly interactive module introduces us to fundamental programming concepts in PHP—one of the most popular languages in the world. It begins with a simple “Hello, World!” program and proceeds to cover common concepts such as conditional statements, loop statements, and logic in PHP. It then reflects upon the idea of functions and arrays, as well as the power they give to the programmer to write better code.

Finally, it dives deeper into advanced concepts such as classes, inheritance, and exception handling in PHP. By the time we're done, we’ll have a good grip on the basics of PHP and will be ready to study advanced concepts.

Learn PHP from Scratch

Here's the code from the previous lesson:

Let's take a look at this in detail. 

We'll start from the very first line and go step by step! 

# PHP Opening Tag
A **PHP** script can be written anywhere in the document, and it signifies the start of the PHP code.

# echo

PHP uses a built-in *function* called `echo` in order to display one or more strings. 


>**Tip:** The `echo` function is faster than the `print()` function. 
 

This lesson explains in detail the Hello World code written in the last lesson. It explains the basic syntax used in almost every PHP code, including opening and closing tags, echo, semicolons, and comments.

"Hello World" Explained

PHP Opening Tag

echo