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<?php
// ³ÌÐòÃû: cart.inc
class Cart {
  var $items;  // ÊÖÍÆ³µÀà
  
  // ±¾·½·¨¼ÓÈë $num ¼þÎïÆ·µ½ÊÖÍÆ³µÖР(¼Óµ½ $artnr ±äÁ¿)
  function add_item ($artnr, $num) {
    $this->items[$artnr] += $num;
  }
  
  // ±¾·½·¨´ÓÊÖÍÆ³µ¼õÉÙ $num ¼þÎïÆ· (´Ó $artnr ±äÁ¿¼õµô)
  function remove_item ($artnr, $num) {
    if ($this->items[$artnr] > $num) {
      $this->items[$artnr] -= $num;
      return true;
    } else {
      return false;
    }   
  }
}
?>
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<?php
require("cart.inc");
$cart = new Cart;
$cart->add_item("10", 1);
?>
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/**
* HTTP Protocol defined status codes
* @param int $num
*/
function https($num) {
$http = array (
100 => "HTTP/1.1 100 Continue",
101 => "HTTP/1.1 101 Switching Protocols",
200 => "HTTP/1.1 200 OK",
201 => "HTTP/1.1 201 Created",
202 => "HTTP/1.1 202 ......

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$s = "new string";
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