这个点菜页面的问题如何解决

<form action="cart.php" method="post">
<table width="100%" border="0" cellspacing="0" cellpadding="0">

<tr>
<td width="20" height="1"> </td>
<td colspan="4" class="header">点菜单</td>
</tr>

<tr>
<td height="25"> </td>
<td width="100" align="center" bgcolor="#CCCCCC" class="con3">选中</td>
<td width="350" align="center" bgcolor="#CCCCCC">菜名</td>
<td width="100" align="center" bgcolor="#CCCCCC">单价</td>
<td width="100" align="center" bgcolor="#CCCCCC">数量</td>
</tr>
<!-- BEGIN DC -->
<tr>
<td width="20" height="25"></td>
<td align="center" class="con3"><input name='ProductID[]' type='checkbox' onClick="unselectall()" id="ProductID[]" value='{ID}' style="border: 0px;background-color: #eeeeee;">
<input type="hidden" name="ID[]" id="ID[]" value="{ID}"/>
</td>
<td>{Atitle}</td>
<td align="right">{Aprice}</td>
<td align="center"><input name="sl[]" type="text" id="sl[]" size="8" value="0"/></td>
</tr>
<!-- END DC -->

<tr>
<td height="50" align="center"></td>
<td height="50" align="center"><input name="chkAll" type="checkbox" id="chkAll" onclick="CheckAll(this.form)" value="checkbox" style="border: 0px;background-color: #eeeeee;"></td>
<td height="50" colspan="3" align="center">
<input type="image" name="imageField" src="../images/xyb.gif" /> </td>
</tr>
</table>
</form>

$dc=array();
for ($i=0;$i<count($_POST['ID']);$i++){
$dc[] = array('id'=>$_POST[$i]['ID'],'sl'=>$_POST[$i]['sl']);
}

$ProductID= $_POST['ProductID'];
if(is_array($ProductID)){
$ids = $comma = "";
foreach($ProductID as $id){
$ids .= "{$comma}{$id}";
$comma = ",";
}}
$sqlids="select ID,Atitle,Aprice from Product Where ID IN ({$ids})";
$sqlids = $db->execute($sqlids);
$sqlids = $sqlids->GetRows();

$id_map = array();
foreach ($dc as $row) {
$id_map[$row['id']] = $row['sl'] ;
}
foreach ($sqlids as $key => $row) {
if (isset($id_map[$row['id']])) {
$sqlids[$key]['sl'] = $id_map[$row['id']];
}else{
$sqlids[$key]['sl'] = '0';
}
}