<?php
/*
 * @author: Sebastiaan H
 * @product: Steen, papier, schaar
 */

if($_SERVER['REQUEST_METHOD'] == 'POST')
{
    if(!isset($_POST['keuze']))
    {
        echo 'Er gaat iets fout!';
    }
    else
    {
        $computer = rand(1, 3);

        if($_POST['keuze'] == 'steen' && $computer == '1')
        {
            echo 'De computer had <b>steen</b>, het is dus gelijk spel.';
        }
        elseif($_POST['keuze'] == 'papier' && $computer == '2')
        {
            echo 'De computer had <b>papier</b>, het is dus gelijk spel';
        }
        elseif($_POST['keuze'] == 'schaar' && $computer == '3')
        {
            echo 'De computer had <b>schaar</b>, het is dus gelijk spel';
        }
        elseif($_POST['keuze'] == 'steen' && $computer == '2')
        {
            echo 'De computer had <b>papier</b>, dus je hebt verloren!';
        }
        elseif($_POST['keuze'] == 'papier' && $computer == '3')
        {
            echo 'De computer had <b>schaar</b>, dus je hebt verloren!';
        }
        elseif($_POST['keuze'] == 'schaar' && $computer == '1')
        {
            echo 'De computer had <b>steen</b>, dus je hebt verloren!';
        }
        elseif($_POST['keuze'] == 'steen' && $computer == '3')
        {
            echo 'De computer had <b>schaar</b>, dus je hebt gewonnen!';
        }
        elseif($_POST['keuze'] == 'papier' && $computer == '1')
        {
            echo 'De computer had <b>steen</b>, dus je hebt gewonnen!';
        }
        elseif($_POST['keuze'] == 'schaar' && $computer == '2')
        {
            echo 'De computer had <b>papier</b>, dus je hebt gewonnen!';
        }
    }
}
else
{
?>

<form action="#" method="post">
    <select name="keuze">
        <option value="steen">Steen</option>
        <option value="papier">Papier</option>
        <option value="schaar">Schaar</option>
    </select>

    <input type="submit" value="Gok" />
</form>

<?php
}
?>