SplSubject::notify
Introduction
Other Basic Extensions
PHP Manual

# SPL Type Handling

- Introduction
- Installing/Configuring
  - Requirements
  - Installation
  - Runtime Configuration
  - Resource Types
- SplType — The SplType class
  - SplType::__construct — Creates a new value of some type
- SplInt — The SplInt class
- SplFloat — The SplFloat class
- SplEnum — The SplEnum class
  - SplEnum::getConstList — Returns all consts (possible values) as an array.
- SplBool — The SplBool class
- SplString — The SplString class

SplSubject::notify
Introduction
Other Basic Extensions
PHP Manual