A static function is a class function that can be called without creating an object of the class.

A function that can be called without creating object

Static Function:

• Static methods can be called without instantiating the class.
• They are also declared using the static keyword.
• You can access them using the class name followed by ::

<?php
class Demo
{
    public static function hello()
    {
        echo "Hello PHP";
    }
}
Demo::hello();
?>