Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual

What has changed in PHP 5.4.x

Warning

This list is incomplete and is undergoing constant changes until PHP 5.4 is is about to be released.

For systems being upgraded from an older version of PHP, the relevant documentation is available at:


Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual