# SPL Functions

## Table of Contents

- class_implements — Return the interfaces which are implemented by the given class or interface
- class_parents — Return the parent classes of the given class
- class_uses — Return the traits used by the given class
- iterator_apply — Call a function for every element in an iterator
- iterator_count — Count the elements in an iterator
- iterator_to_array — Copy the iterator into an array
- spl_autoload_call — Try all registered __autoload() functions to load the requested class
- spl_autoload_extensions — Register and return default file extensions for spl_autoload
- spl_autoload_functions — Return all registered __autoload() functions
- spl_autoload_register — Register given function as __autoload() implementation
- spl_autoload_unregister — Unregister given function as __autoload() implementation
- spl_autoload — Default implementation for __autoload()
- spl_classes — Return available SPL classes
- spl_object_hash — Return hash id for given object
- spl_object_id — Return the integer object handle for given object