Understanding Simple Data Types
Every language has different types of variables—and PHP has no shortage of choices.
The language supports a wide variety of data types, including simple numeric,
character, string, and Boolean types, and more complex arrays and objects.
| Data Type | Description | Example |
| Integer | An integer is a plain-vanilla number like 75, -95, 2000, or 1. |
$age = 99; |
| Boolean | The simplest variable type in PHP, a Boolean variable simply specifies a true or false value |
$auth = true; |
| Floating-point | A floating-point number is typically a fractional number such as 12.5 or 3.149391239129. Floating point numbers may be specified using either decimal or scientific notation. |
$temperature = 56.89; |
| String | A string is a sequence of characters, like 'hello' or 'abracadabra'. String values may be enclosed in either double quotes ("") or single quotes (''). |
$name = 'Harry'; |
example, a variable may need to be specified as type integer or type array.
Give PHP credit for a little intelligence, though—the language can automagically
determine variable type by the context in which it is being used.
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