Programming:Complete PHP/Data type overview

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Although the type of a variable can be set (see Type casting and settype()), it is often decided at runtime (see Type juggling).

There are 8 basic data types.

Contents 1 Scalar types 2 Compound types 3 Special types 4 Pseudo-types for documentation purposes

[edit] Scalar types

• Boolean
• Numeric
  • Integer
  • Float (floating-point, also known as 'double')
• String

[edit] Compound types

• Array
• Object

[edit] Special types

• Resource
• NULL

[edit] Pseudo-types for documentation purposes

• Mixed
• Number
• Callback