Php define constant
- Php define constant array
- Php define constant in class
- Php define constant if not defined
- Php define constant variable
- Php define constant associative array
- Php define constant object
- Php define constant namespace
- Php define constant scope
- Php define constant in interface
- Php define constant in function
- Php define constants in separate file
- Php define constant from environment variable
- Php define global constant
- Php define class constant dynamically
- Php define global constant in class