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
  Created by typecasting to object.
__PHP_Incomplete_Class
  Possibly created by unserialize().

### 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
  Current class.
static
  Current class in runtime.
parent
  Parent class.

List of Keywords
Predefiniowane stałe
List of Reserved Words
PHP Manual