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PHP Versions

Last Updated : 23 Apr, 2025
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PHP has been a key technology in web development from the beginning, helping create interactive websites and web applications. Over the years, PHP has evolved, introducing new features, performance improvements, and better security. Understanding the different PHP versions and their changes is essential for developers to keep their code up to date and take advantage of the latest improvements.

Here we explore the evolution of PHP from PHP 3 to the latest stable PHP 8.4 and offers practical guidance for choosing and migrating between versions.

PHP Versions
All PHP Versions [1998 to 2024]

Let’s take a look at the different versions of PHP, their release years, and the key features they introduced:

Version/Official Name

Release Year

Description

PHP 1 (Personal Home Page Tools 1.0)

1995

*Never Released

PHP 2 (PHP/FI 2)

1997

*Never Released

PHP 3

1998

First Edition for Commercial Use

PHP 4

2000

Added:

  • Zend Engine
  • Session support
  • Output buffering
  • Improved object-oriented programming support

PHP 5

2004

Added:

  • Full OOP support (classes, inheritance, interfaces)
  • PDO (PHP Data Objects) for database interaction
  • Exceptions and better error handling

PHP 7

2015

Added:

  • Major performance improvements
  • Scalar type declarations
  • Null coalescing operator (??)
  • Spaceship operator (<=>)

PHP 8

2020

Added:

  • Just-In-Time (JIT) compilation
  • Union types
  • Match expression
  • Constructor property promotion
  • Attributes (annotations)

PHP 8.1

2021

Added:

  • Fibers for concurrency
  • Readonly properties
  • Intersection types
  • Performance improvements

PHP 8.2

2022

Added:

  • Disjunctive Normal Form (DNF) types
  • Deprecated dynamic variables in classes
  • Read-only classes

PHP 8.3

2023

Added:

  • JIT engine improvements
  • Better error handling
  • Enhanced async programming support

PHP 8.4

(Latest Stable Release)

2024

Added:

  • Property hooks
  • Asymmetric visibility in classes
  • Database driver-specific PDO classes
  • Lazy objects
  • HTML5 support in DOM extension

Did you know? PHP began as a humble set of C scripts crafted by Rasmus Lerdorf to manage his online resume and track visitors. What started as a personal project soon evolved into a powerful tool that would lay the foundation for one of the most widely used programming languages in web development.

Choosing the Right PHP Version for Your Project

Here are main factors that you consider while choosing version of php for your project:

  1. Security: Use actively supported versions only.
  2. Performance: PHP 7+ significantly outperforms earlier versions.
  3. Compatibility: Ensure your CMS/framework supports the version.

PHP Version Recommendations by Project Type

Choose the right PHP version based on your project requirements and compatibility needs:

Project TypeRecommended PHP VersionNotes
WordPress SitesPHP 8.1 or 8.2Balances stability with modern features.
E-commerce PlatformsPHP 8.2 or 8.4Emphasizes performance and security.
Legacy ApplicationsPHP 7.4Suitable during migration phases.
New ProjectsPHP 8.4Offers the latest features and optimizations.

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