New Class Constants

pdo:

• PDO::ATTR_DEFAULT_FETCH_MODE
• PDO::FETCH_PROPS_LATE
• PDO::FETCH_KEY_PAIR Fetches a 2 column result set into an associated array. (Added in PHP 5.2.3)

spl:

• CachingIterator::FULL_CACHE
• CachingIterator::TOSTRING_USE_INNER
• SplFileObject::READ_AHEAD
• SplFileObject::READ_CSV
• SplFileObject::SKIP_EMPTY