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
- Created by dir().
- stdClass
- Created by typecasting to object.
- __PHP_Incomplete_Class
- Possibly created by unserialize().
- Exception
- ErrorException
- php_user_filter
- Closure
- The predefined final class Closure is used for representing anonymous functions.
- Generator
- The predefined final class Generator is used for representing generators.
- ArithmeticError
- AssertionError
- DivisionByZeroError
- Error
- Throwable
- ParseError
- TypeError
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.