karty.php

<?php
//pole všech karet v podobě označení karet číslovaných automaticky od číselného klíče 0
$balicek = array ("&spades;2", "&clubs;2", "&hearts;2", "&diams;2",
                "&spades;3", "&clubs;3", "&hearts;3", "&diams;3",
                "&spades;4", "&clubs;4", "&hearts;4", "&diams;4",
                "&spades;5", "&clubs;5", "&hearts;5", "&diams;5",
                "&spades;6", "&clubs;6", "&hearts;6", "&diams;6",
                "&spades;7", "&clubs;7", "&hearts;7", "&diams;7",
                "&spades;8", "&clubs;8", "&hearts;8", "&diams;8",
                "&spades;9", "&clubs;9", "&hearts;9", "&diams;9",
                "&spades;10", "&clubs;10", "&hearts;10", "&diams;10",
                "&spades;J", "&clubs;J", "&hearts;J", "&diams;J",
                "&spades;Q", "&clubs;Q", "&hearts;Q", "&diams;Q",
                "&spades;K", "&clubs;K", "&hearts;K", "&diams;K",
                "&spades;A", "&clubs;A", "&hearts;A", "&diams;A");
if(isset($_GET["old_cards"])){
    $old_cards = $_GET["old_cards"];
}

if(isset($_GET["kartu"])){          //aby se nedavaly automaticky
    srand();

    $cislo_karty = rand(0, 51);
    $start = 0;                     //start pro substr()

    if(stristr($balicek[$cislo_karty], "&spades;")){
        $start = strlen("&spades;");
    }else if(stristr($balicek[$cislo_karty], "&clubs;")){
        $start = strlen("&clubs;");
    }else if(stristr($balicek[$cislo_karty], "&hearts;")){
        $start = strlen("&hearts;");
    }else if(stristr($balicek[$cislo_karty], "&diams;")){
        $start = strlen("&diams;");
    }

    $value = substr($balicek[$cislo_karty], $start);    //odeberu obrazek a pracuji s hodnotou karty
    if(!is_numeric($value)){                            //pokud znak neni cislo
        switch($value){                                 //tak jej prepisu na jeho ciselnou hodnotu
            case "J": $value=10; break;
            case "Q": $value=10; break;
            case "K": $value=10; break;
            case "A": $value=11; break;
        }
    }

    $dalsi_karty = "";

    if(isset($_GET["old_cards"])){
        $arr_old_cards = explode(",", $_GET["old_cards"]);
        for($i = 0; $i < count($arr_old_cards); $i++){
            $cur_old_card = $arr_old_cards[$i];
            $dalsi_karty.= "<table cellspacing='5'><tr>\n
                    <td width='70px' height='100px' style='border: 2px solid black; text-align:center;'>".$balicek[$cur_old_card]."
                    </td></tr>\n</table>";
        }
    }

    if(isset($_GET["karty"])){
        $old_cards = $_GET["old_cards"];
        $value2 = $_GET["karty"]+$value;
        $old_cards.= ",".$cislo_karty;
    }else{
        $value2 = $value;
        $old_cards = $cislo_karty;
    }

    echo $value2."<br />\n";
    echo "<table cellspacing='5'><tr>";
    echo "<td width='70px' height='100px' style='border: 2px solid black; text-align:center;'>".$balicek[$cislo_karty]."</td>";
    echo "</tr></table>";
    echo $dalsi_karty;

    $to_form = "<input type='hidden' name='karty' value='$value2' />\n";
    $to_form.= "<input type='hidden' name='old_cards' value='$old_cards' />\n";
}else if(!isset($_GET["kartu"])){
    $to_form = "";
}

if(isset($_GET["stop"])){
    srand();

    $value = $_GET["karty"];

    echo "Vaše skore: ".$value."<br />\n";
    $to_form = "<input type='hidden' name='karty' value='0' />\n";
    $to_form.= "<input type='hidden' name='old_cards' value='' />\n";
}
?>
<form method='get' action='karty.php'>
<input type='submit' name='kartu' value='kartu' />
<?php
echo "<input type='submit' name='stop' value='stop' />\n";
echo $to_form;
?>
</form>