(PHP 5, PHP 7) Return available SPL classes array

(PHP 5 >= 5.4.0, PHP 7) Return the traits used by the given class

(PHP 5 >= 5.1.0, PHP 7) Call a function for every element in an iterator

(PHP 5 >= 5.1.2, PHP 7) Unregister given function as __autoload() implementation

(PHP 5 >= 5.1.2, PHP 7) Register given function as __autoload() implementation

(PHP 5 >= 5.1.2, PHP 7) Default implementation for __autoload()

(PHP 5 >= 5.1.2, PHP 7) Try all registered __autoload() function to load the requested class

(PHP 5 >= 5.2.0, PHP 7) Return hash id for given object

(PHP 5 >= 5.1.2, PHP 7) Register and return default file extensions for spl_autoload

(PHP 5 >= 5.1.0, PHP 7) Copy the iterator into an array