PHP Deck of Cards Object

<!DOCTYPE html>
<?php
    class Card{
        public $rank;
        public $suit;
        function __construct($rank, $suit){
            $this->rank = $rank;
            $this->suit = $suit;
        }
    }

    class Deck{
        public $card = array();
        function __construct(){
            $ranks = array("Ace",2,3,4,5,6,7,8,9,10,"Jack","Queen","King");
            $suits = array("Clubs","Spades","Hearts","Diamonds");
            foreach($suits as $suit){
                foreach($ranks as $rank){
                    $card = new Card($rank, $suit);
                    array_push($this->card,$card);
                }
            }
        }
    }

    $deck = new Deck();

    function deal($deck){
        $cardNum = rand(0,52);
        $card = $deck->card[$cardNum];
        echo $card->rank . " of " . $card->suit;
    }

    //Session to save card count
    session_start();
    $cardCount = 0;
    if($_GET['draw']){
        $_SESSION['cardCount'] += intval($_GET['draw']);
        $cardCount = $_SESSION['cardCount'];
    }


?>
<html>
    <head>
        <title>Cards</title>
        <meta charset="UTF-8">
        <link rel="stylesheet" href="style.css" type="text/css">
    </head>
    <body>
        <a id="drawCard" href="index.php?draw=1">Draw Card</a>
        <ul id="output">
            <?php while($cardCount): ?>
            <li><?php deal($deck);?></li>
            <?php $cardCount--; endwhile; ?>
        </ul>
    </body>
</html>