Static Properties in OOP in PHP

In addition to static methods, you can also create static properties. Such properties are also declared using the keyword static:

<?php
	class Test
	{
		public static $property;
	}
?>

You can write something to a static property and read from it. The property name is specified with the dollar sign:

<?php
	Test::$property = 'test';
	echo Test::$property; // outputs 'test'
?>

Create a Num class that will have two public static properties: num1 and num2. Write the number 2 to the first property, and the number 3 to the second one. Display the sum of the property values on the screen.