Desafio Asolucoesweb - Exercício lógica

<?php

$val = 3;
$next = null;
$result = $val * 1;

echo "Multipleque: 3 x 1 = ".$result."<br>";

for($i=0;$i<9;$i++){
    $next = $result;
    $result = 3 * $result;
    echo "Multipleque: 3 x " . $next . " = " . $result . "<br>";
}