<?php
// Class definition that creates an instance of a class
class ExampleClass {
    public $exampleVariable; // a variable belonging to the class instance

    // Constructor function, called when an object is created
    public function __construct($value) {
        $this->exampleVariable = $value; // assigns value to the instance variable
    }

    // Function that adds two numbers
    public function add($number1, $number2) {
        return $number1 + $number2; // returns the sum
    }
}

// Example function: multiplies two numbers
function multiply($number1, $number2) {
    return $number1 * $number2; // returns the product
}

// Array example
$sampleArray = [1, 2, 3, 4, 5]; // array of numbers
?>