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PHP

PHP

PHP is a general purpose scripting language designed primarily for web development. It is one of the most popular programming languages for web development, and supports multiple programming paradigms.

Master PHP with
Interactive Learning

Elevate your PHP skills through 117 curated exercises across 8 core concepts. Master problem-solving with a structured learning path designed for modern developers.

PHP

About PHP

PHP is a server-side language suited towards web development. The acronym is recursive, standing for PHP: Hypertext Preprocessor.

Considerably more versatile than CGI scripting, PHP is often used to add interactivity to plain HTML and bolster web frameworks.

The language can be employed on any operating system. PHP is supported by most common web servers and is often handled through an interpreter module. This combines static web code with dynamic inclusions.

PHP isn't just a web server framework. It's also useful for command-line scripting (headless parsing) and developing GUIs.

You should learn PHP because:

  • it's an Open Source language
  • it's well-documented and supported
  • it's compatible with most common web servers
  • it's easy to pick up and start learning
  • it's highly scalable and extensible

Key Features of PHP

Evolving

PHP is constantly being updated and improved.

Web Focused

PHP was designed specifically with web development in mind.

Flexible

As a general purpose scripting language, PHP can be used for almost any task.

Practical

PHP's simple syntax, gradual typing, and robust standard library make rapid development a breeze.

Well Documented

PHP is well documented by the official PHP.net website, which includes helpful community commentary.

Cross-platform

Write once, run anywhere PHP is supported.

Track icon

Evolving

PHP is constantly being updated and improved.

Web Focused

PHP was designed specifically with web development in mind.

Flexible

As a general purpose scripting language, PHP can be used for almost any task.

Practical

PHP's simple syntax, gradual typing, and robust standard library make rapid development a breeze.

Well Documented

PHP is well documented by the official PHP.net website, which includes helpful community commentary.

Cross-platform

Write once, run anywhere PHP is supported.

A taste of PHP concepts you'll cover

Ba

Basics

St

Strings

In

Integers

Fl

Floating Point Numbers

Ar

Arithmetic Operators

Bo

Booleans

Ar

Arrays

Va

Variable-Length Arguments

Cl

Classes

Ty

Type Declaration

Ty

Type Juggling

Va

Variable Scope

Us

User Defined Functions

Wh

While Loops

Fo

For Loops

Fo

Foreach Loops

Un

Union Types

Va

Variable Functions

Sc

Scope Resolution Operator

Te

Ternary Operator

Sw

Switch Statement

Co

Covariance and Contravariance

Br

Break and Continue

Nu

Null

St

Static Classes

Ma

Match Expressions

Co

Comparison Operators

If

If, Else, Elseif

An

Anonymous Functions and Closures

Cl

Class Visibility

Re

Readonly Classes and Properties

Co

Constructor Promotion

Dive into PHP practice challenges

Hello World
Hello World
Level 1

SlaveCode's classic introductory exercise. Just say "Hello, World!".

Reverse String
Reverse String
Level 1

Reverse a given string.

Resistor Color
Resistor Color
Level 1

Convert a resistor band's color to its numeric representation.

Line up
Line up
Level 2

Help lining up customers at Yaʻqūb's Deli.

Hamming
Hamming
Level 2

Calculate the Hamming distance between two DNA strands.

Resistor Color Duo
Resistor Color Duo
Level 1

Convert color codes, as used on resistors, to a numeric value.