New Classes and Interfaces

The following classes were introduced in PHP
5.4.0:

SPL:

• CallbackFilterIterator
• RecursiveCallbackFilterIterator

Reflection:

• ReflectionZendExtension

Json:

• JsonSerializable

Session:

• SessionHandler
• SessionHandlerInterface

Snmp:

• SNMP

Intl:

• Transliterator
• Spoofchecker