# PHP Data Types

PHP Data Types are used to define the type of data that is to be stored. PHP data types can be classified into 3 groups:

1. String
2. Integer
3. Float
4. Boolean

1. Array
2. Object

## ● Special Data Types:

1. NULL
2. Resource

String:

A sequence of characters is called as string. A string should be written inside a single or double quote.

Integer:

All the non-decimal numbers between -2,147,483,648 and 2,147,483,647 are called as Integers.

Float:

Float represents all the decimal and exponential numbers.

Boolean:

The boolean data type can only take two values, either TRUE or FALSE.

Array:

Array is used to store multiple data of same data type in the name of a single variable.

Object:

An object defines how a data need to be processed.

NULL:

A NULL data types holds a NULL value.

Resource:

It is not an actual data type. It is used to store external references and resources.

Example:

<!DOCTYPE html> <html> <body>   <?php   $x = "Hello world!";$y = 5000; $z = 10.01;$w = array("a","b","c"); $v = null; var_dump($x); var_dump($y); var_dump($z); var_dump($w); var_dump($v);   ?> </body> </html>