PHP Puzzle - php[arch] March 2021

rps.php

<?php

$winner = rpsCompare('rock', 'paper');
// $winner = rpsCompare('rock', 'rock');
// $winner = rpsCompare('rock', 'scissors');
// $winner = rpsCompare('scissors', 'paper');
// $winner = rpsCompare('scissors', 'rock');
// $winner = rpsCompare('paper', 'scissors');
// $winner = rpsCompare('paper', 'rock');

if ($winner === 0) {
    echo "WE HAVE A TIE!";
    exit;
}

echo "Player $winner has won this round";

function rpsCompare($player_1, $player_2)
{

    // We have a Tie
    if ($player_1 === $player_2) {
        return 0;
    }

    // Player 1 Wins
    if ($player_1 == "rock" && $player_2 == "scissors") {
        return 1;
    }

    if ($player_1 == "scissors" && $player_2 == "paper") {
        return 1;
    }

    if ($player_1 == "paper" && $player_2 == "rock") {
        return 1;
    }

    // Player 2 Wins
    return 2;
}