Question

我是PHP的初学者，我想在Wordpress的页面下拉列表中显示来自数据库MySQL的数据。我用了这段代码：

<tr>
<td> Owner </td>
<td>
<select name="owner">
<?php 
// $connection = mysql_connect(localhost, root, );
$connection = mysql_connect(localhost, root, );

$sql = mysqli_query($connection, "SELECT Nom FROM `herboristes`");

while ($row = $sql->fetch_assoc()){

?>
</select>
<option value="owner1"><?php echo $row['Nom']; ?></option>
</td>
</tr>

问题是我得到一个空的下拉列表，如下图所示：

image

请，任何建议。谢谢！

Answer 1

while ($row = $sql->fetch_assoc()){

?>
</select>
<option value="owner1"><?php echo $row['Nom']; ?></option>
</td>
</tr>

可能不见了？

<?php } ?>

Answer 2

我真的不知道你想用什么？ MySQL的？mysqli的？我不能知道.. 但你不应该使用mysql_你可以看看 Why shouldn't I use mysql_* functions in PHP? ..所以我们会说你将使用mysqli

<tr>
  <td> Owner </td>
  <td>
    <select name="owner">
    <?php 
    // $connection = mysql_connect(localhost, root, );
    $connection = mysqli_connect(localhost, root, );  //mysqli here

    $sql = mysqli_query($connection, "SELECT Nom FROM `herboristes`");

    while ($row = mysqli_fetch_assoc($sql)){   //mysqli here
       echo '<option value="owner1">'. $row["Nom"] .'</option>';  //echo your options here
    }
    ?>
    </select>
  </td>
</tr>

Answer 3

<强>尝试

$connection = mysqli_connect("localhost", "root");

或

$connection = mysqli_connect("localhost", "root", "");

Answer 4

不需要在wordpress页面中编写数据库连接相反，我们可以使用

    <tr>
    <td> Owner </td>
    <td>
    <select name="owner">
<?php 
        global $wpdb;
        $entries = $wpdb->get_results("SELECT Nom  FROM herboristes");
        foreach( $entries as $entry ) {
    ?>
        <option value="<?php echo  $entry->Nom; ?>"><?php echo  $entry->Nom; ?> </option>
        <?php } ?>

    </select>

在Wordpress页面的下拉列表中显示数据库mySQL中的数据

4 个答案: