php - 将选项组添加到查询

Question

我正在尝试将选项组添加到此选择框。我正在获取记录集中的行数和选项数。我可以得到计数或设置组。我还没有做这两个！

<select name="DETAILS">
<?php
include("config.php");
$sql = "SELECT tblDetails.DetailType AS type, CONCAT(tblDetails.DetailName,' (', Count(tblLocDet.DetailID),')') AS DetailName
FROM tblLocations INNER JOIN (tblLocDet INNER JOIN tblDetails ON tblLocDet.DetailID = tblDetails.DetailID) ON tblLocations.LocationID = tblLocDet.LocationID
GROUP BY tblDetails.DetailType, tblDetails.DetailName, tblLocations.CityID, tblLocations.AreaID, tblLocations.CuisineID
HAVING (((tblLocations.CityID)=16) AND ((tblLocations.AreaID)=131) AND ((tblLocations.CuisineID)=3));";


$result = mysql_query($sql) or die(mysql_error());  

while ($row = mysql_fetch_assoc($result)) { 
   echo "<optgroup label='{$row['type']}'>"; 
   $DetailNames = explode('|', $row['DetailName']); 
   foreach($DetailNames as $DetailName) { 
      echo "<option value='".$DetailName."'>".$DetailName."</option>"; 
   } 
   echo "</optgroup>"; 
}  
?>
</select> 

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