Standard PHP Library (SPL)
- 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 - Default implementation for __autoload()
- 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_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