PHP Data Types

PHP data types are used to hold different types of data or values. PHP supports 8 primitive data types that can be categorized further in 3 types:

• Scalar Types
• Compound Types
• Special Types

PHP supports ten primitive types.

Four scalar types:

• boolean
• integer
• float (floating-point number, aka double)
• string

Four compound types:

• array
• object
• callable
• iterable

Two special types:

• resource
• NULL

PHP supports the following data types:

• String
• Integer
• Float (floating point numbers - also called double)
• Boolean
• Array
• Object
• NULL
• Resource