PHP Programming Language

<?php
class ReverseNumber {

    public function reverse() {
        $input = 123;

        $output = 0;
        $temp = $input;

        while ($temp > 0) {
            $remainder = $temp % 10;
            $output = ($output * 10) + $remainder;
            $temp = (int)($temp / 10);
        }

        echo("Original Number: " . $input . "\n");
        echo("Reverse Number: " . $output . "\n");
    }
}

$obj = new ReverseNumber();
$obj->reverse();