Question

I have a game development project and I have specific character one of the skill of the character is that it has a 10% chance of doubling its attack.

Question: How can I trigger it?

Answer 1

function doubleHit($percentChance = 30)
{
    if (mt_rand(1,100) <= $percentChance) {
        return true;
    }

    return false;
}

var_dump(doubleHit(35)); // will return either true / false

Note that this is only pseudorandom. Also note that this is faster / better than rand().