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History of PHP and Related
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Migrating from PHP 8.0.X to PHP 8.1X
Migrating from PHP 8.0X to
PHP 81X
Migrating from PHP 7.4X to
Table of Contents
PHP &.0X
Migrating from PHP I3xto
New Features
PHP 7.4X
New Classes and Interfaces
Migrating from PHP 72Xto
New Functions
PHP 7.3X
New Global Constants
Migrating from PHP 7Ix to PHP
Backward Incompatible Changes
7.2X
Deprecated Features
Migrating from PHP 7.0x to
Other Changes
PHP Z1X
Migrating from PHP 5,6x to
This new minor version brings with it a number of new features and
few incompatibilities that
PHP Z.0X
should be tested for before switching PHP versions in production environments
Migrating from PHP 5.5xto
PHP 5.6X
See also the migration guides for PHP versions
72X73X74X80X
Debugging in PHP
Configure options
phpini directives
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List of Reserved Words
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Z1X