Challenge 1 / 1

Imagine you have two Ship objects:

$ship1 = new Ship();
$ship1->weaponPower = 10;

$ship2 = new Ship();
$ship2->weaponPower = 5;

Suddenly, you want to boost ship1's weapon power. So you write:

$ship1->weaponPower = 15;

After this last line, what is the weaponPower of $ship2?