List of Keywords
Predefiniowane stałe
List of Reserved Words
PHP Manual

## Predefined Classes

This section lists standard predefined classes. Miscellaneous extensions define other classes which are described in their reference.

### Standard Defined Classes

These classes are defined in the standard set of functions included in the PHP build.

Directory
  The class from which dir is instantiated.
stdClass
__PHP_Incomplete_Class

### Predefined classes as of PHP 5

These additional predefined classes were introduced in PHP 5.0.0.

exception
php_user_filter

### Closure

The predefined final class Closure was introduced in PHP 5.3.0. It is used for internal implementation of anonymous functions.

The class has a constructor forbidding the manual creation of the object (issues `E_RECOVERABLE_ERROR`) and the __invoke method with the calling magic.

### Special classes

Following identifiers may not be used as a class name as they have special purpose.

self
parent

List of Keywords
Predefiniowane stałe
List of Reserved Words
PHP Manual