<?php

$weapons = ['fists', 'whip', 'gun'];
$opponentWeapon = $weapons[rand(0,2)];

switch ($opponentWeapon) {
	case 'fists':
		$indiWeapon = $weapons[2];
		break;
	case 'whip':
		$indiWeapon = $weapons[0];
		break;
	case 'gun':
		$indiWeapon = $weapons[1];
		break;
}

echo "opponentWeapon ", $opponentWeapon, "<br>";
echo "indiWeapon ", $indiWeapon, "<br>";