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PHP

PHP API up to PHP 8.1 version

• PHP Watch by version
  • PHP 8.1: What’s New and Changed
  • PHP 8.0: What’s New and Changed
  • PHP 7.4: What’s New and Changed
  • PHP 7.3: What’s New and Changed
• Php Releases
  • PHP 8.1
  • PHP 8.0
  • PHP 7.4
  • PHP 7.3
  • PHP 7.2
  • PHP 7.1
  • PHP 7.0

Object Oriented Programming

• Classes and Objects - php.net

Namespaces

• PHP Namespaces in 120 seconds - symfonycasts.com
• Namespaces - php.net
• Using namespaces: Basics - php.net
• Name resolution rules - php.net

Interfaces

• Object Interfaces - php.net
• Type Operators - php.net
• Type declarations - php.net

Anonymous functions and closures

• Anonymous functions - php.net
• Closure - php.net

Abstract classes

• Class Abstraction - php.net

Exception and error handling

• Exception (class) - php.net
• Exceptions - php.net
• error_reporting - php.net

Traits

• Traits - php.net

PHP extensions

• Extensions (sorted by Membership) - php.net
• Command line options - php.net

SPL

• Standard PHP Library - php.net