sub.phl

<?php
class Cart {
    var $item;

    //新規
    function Cart() {
        $this->item = null;
    }

    //商品追加
    function addItem($item_cd, $num) {
        $this->item[$item_cd] += $num;
    }

    //商品削除
    function removeItem($item_cd, $num) {
        $this->item[$item_cd] -= $num;
        if ($this->item[$item_cd] < 0) {
            $this->item[$item_cd] = 0;
        }
    }

    //商品全削除
    function clear() {
        $this->item = null;
    }

    //商品一覧表示
    function showItem() {
        if ($this->item != null){
            $tmp = "";
            while(list($_cd, $_num) = each($this->item)) {
                $tmp .= "<tr>" .
                        "<td>" . '..'. $_cd .'..'. "</td>" .
                        "<td> ".
                        "<input type='text' value='".$_num."' size='3'>".
                        "</td>" .
                        "</tr>";
            }
	    print "買物かごの中身<p>\n";
            echo "<table cellspacing=0 cellpadding=3 border=1>".$tmp."</table>";
        }
    }
}
?>