设置标签的值<；选择>；php中数据库的html

下面的代码设置从表department选择的标记的值

<select name='dept'>
       <option value="">Select a department</option>

<?php
       $sql = "SELECT deptNo, deptName FROM Department";
       $result = mysqli_query($conn, $sql);
     if (mysqli_num_rows($result) > 0) {
while($row = mysqli_fetch_assoc($result)) {
          echo "<option value=$row[deptNo]";  

选择一个部门
试试这个

if ($dept == $row["deptNo"]) echo ' selected="selected"';

echo语句中的空格尝试以下操作：

<?php
   $sql = "SELECT deptNo, deptName FROM Department";
   $result = mysqli_query($conn, $sql);
   if (mysqli_num_rows($result) > 0) {
     while($row = mysqli_fetch_assoc($result)) { 
        $selected = ($dept == $row["deptNo"]) ? "selected" : "";
 ?>
<option value= "<?php echo $row['deptNo']; ?>" <?php echo $selected; ?> >
   <?php echo $row['deptName']; ?>
</option>
<?php } } ?>



希望这有帮助

和平！xD

<?php
   $sql = "SELECT deptNo, deptName FROM Department";
   $result = mysqli_query($conn, $sql);
   if (mysqli_num_rows($result) > 0) {
     while($row = mysqli_fetch_assoc($result)) { 
        $selected = ($dept == $row["deptNo"]) ? "selected" : "";
 ?>
<option value= "<?php echo $row['deptNo']; ?>" <?php echo $selected; ?> >
   <?php echo $row['deptName']; ?>
</option>
<?php } } ?>