如果空消息一直出现下拉

Question

在我的下拉框中，它是必填字段，但即使选择了某些内容，也会显示验证消息，

 if(empty($data['department']) || strlen($data['department']) )
    {
    $err[] = "ERROR - Please enter the department you are applying for.";
    }

是从

中提取的

$insert = "INSERT into users
`department`,  VALUES ( '$data[department] )";

HTML：

<td>Department<span class="required">*</span> </td>
        <td><select name="department"  id="department">

            <option value="" selected></option>

            <option <? if($department == '1') { ?> selected <? } ?>   
 value="1">1</option>

            <option <? if($department== '2') { ?> selected <? } ?> value="2">2   
  </option>

            <option <? if($department == '3') { ?> selected <? } ?> 
 value="3">3</option>


            </select>

Answer 1

试试这个：

if (empty($data['department']))
{
    $err[] = "ERROR - Please enter the department you are applying for.";
}

如果变量为空，则无需检查strlen

Answer 2

这条线是矛盾的，并且总会返回true。

empty($data['department']) || strlen($data['department'])

只要使用上半场就可以了。

Answer 3

您可能希望从selected移除<option value="" selected>并尝试，因为如果$department==1您有两个selected选项可能导致错误。