Backward Incompatible Changes
Changes made to Windows support
Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual
New features
PHP 5.4.0 offers a wide range of new features:
Support for
traits
has been added.
Backward Incompatible Changes
Changes made to Windows support
Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual