Php “违约”；请选择"；使用echo的值

我正在尝试在我的值之前添加“请选择”

<?php
      include "dbconnect.php";
      $resultSet = $con->query("SELECT eventDuration, durationName FROM tbl_duration");
      ?>
   <label class="col-sm-2 control-label" for="eventDuration">Duration:</label>
   <div class="col-sm-10">
      <select name="eventDuration">
      <?php
         while($rows = $resultSet->fetch_assoc())
         {
            $durationName = $rows['durationName'];
         echo "<option value='0'>Please select...</option>";
            echo "<option value='$durationName'>$durationName</option>";
         }
         ?>
      </select>
   </div>

---

您可以将默认的

从循环中取出

<?php
include "dbconnect.php";
$resultSet = $con->query("SELECT eventDuration, durationName FROM tbl_duration");
?>
<label class="col-sm-2 control-label" for="eventDuration">Duration:</label>
<div class="col-sm-10">
    <select name="eventDuration">
        <option value='0'>Please select...</option>
        <?php foreach ($resultSet as $row): ?>
        <option value='<?=htmlspecialchars($row['durationName']) ?>'><?=htmlspecialchars($row['durationName']) ?></option>
        <?php endforeach; ?>
    </select>
</div>

持续时间：
请选择。。。

您可以移动

回显“请选择…”跳出循环是否也选择一项工作？
<?php
include "dbconnect.php";
$resultSet = $con->query("SELECT eventDuration, durationName FROM tbl_duration");
?>
<label class="col-sm-2 control-label" for="eventDuration">Duration:</label>
<div class="col-sm-10">
    <select name="eventDuration">
        <option value='0'>Please select...</option>
        <?php foreach ($resultSet as $row): ?>
        <option value='<?=htmlspecialchars($row['durationName']) ?>'><?=htmlspecialchars($row['durationName']) ?></option>
        <?php endforeach; ?>
    </select>
</div>