Example

process.php

<?php

$player_move = $_POST['userPick'];

$computer_move = ['Rock', 'Paper', 'Scissors'][rand(0, 2)];

$win = check_moves($player_move, $computer_move);

function check_moves($player, $computer)
{
    # Define variabel to track the winner if any, otherwise it will be a tie!
    $win = '';

    # Game Logic begins with check if their moves are equal, then it will be a 'tie'
    if ($player == $computer) {
        $win = 'Tied';
    }
    # player move is 'Rock' and Computer move is 'Scissors'
    elseif (($player == 'Rock') && ($computer == 'Scissors')) {
        $win = 'Player';
    # player move is 'Rock' and Computer move is 'Paper'
    } elseif (($player == 'Rock') && ($computer == 'Paper')) {
        $win = 'Computer';
    # Player move is 'Scissors' and Computer move is 'Rock'
    } elseif (($player == 'Scissors') && ($computer  == 'Rock')) {
        $win = 'Computer';
    # Player move is 'Scissors' and Computer move is 'Paper'
    } elseif (($player == 'Scissors') && ($computer  == 'Paper')) {
        $win = 'Player';
    # Player move is 'Paper' and Computer move is 'Rock'
    } elseif (($player == 'Paper') && ($computer  == 'Rock')) {
        $win = 'Player';
    # Player move is 'Paper' and Computer move is 'Scissors'
    } elseif (($player == 'Paper') && ($computer  == 'Scissors')) {
        $win = 'Computer';
    }
    
    return $win;
}

require 'index-view.php';