PHP Data Types

PHP supports several data types that are grouped into scalar types, compound types, and special types. Here's a breakdown:

Scalar Types

These represent single values:

1. Integer
   Whole numbers, e.g., 10, -20, 0.

2. Float (Double)
   Decimal numbers, e.g., 3.14, -0.5.

3. String
   A sequence of characters, e.g., "Hello, PHP!", '123'.

4. Boolean
   Represents two values: true or false.

Compound Types

These hold multiple values:

5. Array
   A collection of values, e.g.,

   $fruits = ["apple", "banana", "cherry"];

6. Object
   An instance of a class:

   class Car { public $color; } $myCar = new Car();

Special Types

7. NULL
   A variable with no value:

   $x = null;

8. Resource
   A reference to an external resource (e.g., database connection or file handle):

   $handle = fopen("file.txt", "r");

Example: