New Classes and Interfaces
Removed Extensions
Migrating from PHP 5.3.x to PHP 5.4.x
PHP Manual

## New Methods

Several new methods were introduced in 5.4.0:

XSL:

- XsltProcessor::setSecurityPrefs
- XsltProcessor::getSecurityPrefs

SPL:

- RegexIterator::getRegex
- SplObjectStorage::getHash
- DirectoryIterator::getExtension
- SplDoublyLinkedList::serialize
- SplDoublyLinkedList::unserialize
- SplFileInfo::getExtension
- SplFileObject::fputcsv
- SplQueue::serialize
- SplQueue::unserialize
- SplStack::serialize
- SplStack::unserialize
- SplTempFileObject::fputcsv

Reflection:

- ReflectionExtension::isPersistent
- ReflectionExtension::isTemporary
- ReflectionClass::isCloneable

Closure:

- Closure::bind
- Closure::bindTo

PDO_dblib:

- PDO::newRowset

StreamWrapper:

- StreamWrapper::stream_metadata
- StreamWrapper::stream_truncate