cookies in winkelwagen

<?php 
require "header.php"; 
require "authenticatie.php"; 

      //toevoegen 
      if( isset( $_POST['ADD'] ) && ereg('^[1-9][0-9]*$', $_POST['aantal'])) { 
      $_SESSION['winkelwagen'][$_POST['artikelid']] = $_POST['aantal']; 
      } 
      //verwijderen 
      if( isset($_GET['DEL'] ) ) { 
      unset($_SESSION['winkelwagen'][$_GET['DEL']]); 
      } 
      // Show lijst 
      if( $_SESSION['winkelwagen'] ) { 
      $totaal =0; 
      echo "<p><div class=\"big\">De winkelwagen</div><br>"; 
      echo "<table border=2 cellpadding=0 cellspacing=0>"; 
      echo "<tr><td><b>Aantal</b></td><td><b>Naam</b></td><td><b>Prijs is &euro</b></td><td>Bewerken</td></tr>"; 
      foreach ( $_SESSION['winkelwagen'] as $key=>$val ) { 
      $sql = "SELECT * FROM artikel WHERE ARTIKEL_ID=$key"; 
      $resultaat = mysql_query($sql); 
      while ($rij = mysql_fetch_array($resultaat)) { 
      echo "<tr>"; 
      echo "<td>$val</td>"; 
      echo "<td>".$rij['Naam']."</td>"; 
      echo "<td>".number_format($rij['Prijs'], 2, ',', ' ')."</td>"; 
      echo "<td><a href=\"$PHP_SELF?DEL=$key\">[Verwijder]</a></td>"; 
      echo "</tr>"; 
      $totaal = $totaal + ($rij["Prijs"] * $val); 
    } 
} 
      echo "</table>"; 
      echo " <p>Totaalbedrag: &euro; ".number_format($totaal, 2, ',', ' ')."<br>"; 
      echo ">> <a href=\"bestelling.php\" onClick=\"return Confirm(0)\">[Bestelling uitvoeren]</a>"; 
      } else { 
       echo "De winkelwagen is momenteel leeg..."; 
      } 
      if($_GET["artikelid"]) { 
      $sql = "SELECT * FROM artikel WHERE ARTIKEL_ID=".$_GET["artikelid"]; 
      $result = mysql_query($sql)or die(mysql_error()); 
      if(mysql_num_rows($result) > 0) { 
      $naam = mysql_result($result, 0, "Naam"); 
      $prijs = number_format(mysql_result($result, 0, "Prijs"), 2, ',', ' '); 
       
      echo "<p><div class=\"big\">Artikel toevoegen aan winkelwagen</div>"; 
      echo "<form method=\"post\" action=\"$PHP_SELF\">"; 
      echo "<input type=\"hidden\" name=\"artikelid\" value=\"$artikelid\">"; 
      echo"<input type=\"text\" name=\"aantal\" value=\"1\" size=\"2\" maxlength=\"2\">"; 
      echo " x Artikel: $naam (prijs: $prijs euro)"; 
      echo "<input type=\"submit\" name=\"ADD\" value=\"Toevoegen\">"; 
      echo "</form"; 
    } 
} 
require "footer.php"; 
?> 
 

<?php 
require "header.php"; 
require "authenticatie.php"; 
 
      //toevoegen 
      if( isset( $_POST['ADD'] ) && ereg('^[1-9][0-9]*$', $_POST['aantal'])) { 
      $_SESSION['winkelwagen'][$_POST['artikelid']] = $_POST['aantal']; 
      } 
      //verwijderen 
      if( isset($_GET['DEL'] ) ) { 
      unset($_SESSION['winkelwagen'][$_GET['DEL']]); 
      } 
      // Show lijst 
      if( $_SESSION['winkelwagen'] ) { 
      $totaal =0; 
      echo "<p><div class=\"big\">De winkelwagen</div><br>"; 
      echo "<table border=2 cellpadding=0 cellspacing=0>"; 
      echo "<tr><td><b>Aantal</b></td><td><b>Naam</b></td><td><b>Prijs is &euro</b></td><td>Bewerken</td></tr>"; 
      foreach ( $_SESSION['winkelwagen'] as $key=>$val ) { 
      $sql = "SELECT * FROM artikel WHERE ARTIKEL_ID=$key"; 
      $resultaat = mysql_query($sql); 
      while ($rij = mysql_fetch_array($resultaat)) { 
      echo "<tr>"; 
      echo "<td>$val</td>"; 
      echo "<td>".$rij['Naam']."</td>"; 
      echo "<td>".number_format($rij['Prijs'], 2, ',', ' ')."</td>"; 
      echo "<td><a href=\"$PHP_SELF?DEL=$key\">[Verwijder]</a></td>"; 
      echo "</tr>"; 
      $totaal = $totaal + ($rij["Prijs"] * $val); 
    } 
} 
      echo "</table>"; 
      echo " <p>Totaalbedrag: &euro; ".number_format($totaal, 2, ',', ' ')."<br>"; 
      echo ">> <a href=\"bestelling.php\" onClick=\"return Confirm(0)\">[Bestelling uitvoeren]</a>"; 
      } else { 
       echo "De winkelwagen is momenteel leeg..."; 
      } 
      if($_GET["artikelid"]) { 
      $sql = "SELECT * FROM artikel WHERE ARTIKEL_ID=".$_GET["artikelid"]; 
      $result = mysql_query($sql)or die(mysql_error()); 
      if(mysql_num_rows($result) > 0) { 
      $naam = mysql_result($result, 0, "Naam"); 
      $prijs = number_format(mysql_result($result, 0, "Prijs"), 2, ',', ' '); 
 
      echo "<p><div class=\"big\">Artikel toevoegen aan winkelwagen</div>"; 
      echo "<form method=\"post\" action=\"$PHP_SELF\">"; 
      echo "<input type=\"hidden\" name=\"artikelid\" value=\"$artikelid\">"; 
      echo"<input type=\"text\" name=\"aantal\" value=\"1\" size=\"2\" maxlength=\"2\">"; 
      echo " x Artikel: $naam (prijs: $prijs euro)"; 
      echo "<input type=\"submit\" name=\"ADD\" value=\"Toevoegen\">"; 
      echo "</form"; 
    } 
} 
require "footer.php"; 
?>

<?setcookie("winkelwagen", "", time()+60*60*24*30);?> 

<?setcookie("winkelwagen", "", time()+60*60*24*30);?>