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History of PHP and Related Projects
Migrating from PHP 8.0x to PHP &1X
Migrating from PHP 7.3X to PHP 7.4.X
Migrating from PHP 7.4X to PHP &.0x
" Migrating from PHP 7.3x to PHP 74X
Migrating from PHP T2xto PHP 7.3X
Table of Contents
Migrating from PHP 7Ix to PHP 7.2X
Migrating from PHP Z.Ox to PHP 71X
New Features
Migrating from PHP 5.6X to PHP Z.0X
New Classes and Interfaces
Migrating from PHP 5.5x to PHP 5.6X
New Functions
Debugging in PHP
New Global Constants
Configure options
Backward Incompatible Changes
phpini directives
Deprecated Features
Extension List/Categorization
Removed Extensions
List of Function Aliases
Other Changes
List of Reserved Words
Windows Support
List of Resource Types
List of Available Filters
This new minor version brings with it a number of new features and
few incompatibilities that should be tested for before switching PHP
List of Supported Socket Transports
versions in production environments
PHP type comparison tables
List of Parser Tokens
See also the migration guides for PHP versions ZOx 7Lx Z2x and 73X
Userland Naming Guide
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