Scalar (contains only one value at a time)
- boolean
- int
- float
- string
Composite
- arrays
- objects
Numerical Values (int & float)
- Decimal - 10; -12 ; 1234
- Octal - 0666, 0100
- Hexadecimal - 0×123; 0xFF; -0xAA
Floating-point Notations
- Decimal - 0.12; 123.56; -.34
- Exponential - 2E3 (=2000), 1.2e3 (=1200)