php - 如何禁用下拉选项

Question

我有从选择查询中获得的下拉列表。对于服务被预订的特定日期意味着我想在下拉列表中禁用该服务我该怎么做

$query = "SELECT Services,Amount from wp_inside_mandir WHERE Status='Active' "; 
$result = mysql_query ($query);
echo "<option value='0'>------------Choose Service----------</option>";
while($r = mysql_fetch_array($result))
{
 echo '<option value="'.$r['Services'].'" data-time='.$r['Amount'].'>'.$r['Services'].'-'.$r['Amount'].'</option>';
}

我想禁用此查询的服务结果(从 wp_pooja_services 选择服务，其中 Date='$date' and Location='Inside' and Payment_Status!='Cancelled')

Answer 1

尝试下面的代码片段来按条件禁用选项

$disabledFlag = (condition) ? 'disabled="disabled"' : '' ;
echo '<option value="'.$r['Services'].'" data-time='.$r['Amount']. ' ' . $disabledFlag >'.$r['Services'].'-'.$r['Amount'].'</option>';