Other changes to extensions
New Global Constants
Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual
New Classes
The following classes were introduced in PHP 5.4.0:
SPL
:
CallbackFilterIterator
RecursiveCallbackFilterIterator
Reflection
:
ReflectionZendExtension
Json
:
JsonSerializable
interface
Session
:
SessionHandler
interface
Snmp
:
SNMP
Intl
:
Transliterator
Spoofchecker
Other changes to extensions
New Global Constants
Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual