php下拉菜单放在html表

Question

我已完成此下拉菜单，该菜单从我的数据库中获取不同的POS。它显示为附图所示。

但是我希望将php下拉菜单放在html表中。如第二张图所示。所以我可以更新特定的字段。但我不知道该怎么做，请帮忙！ ：）

<td><input type="text" name="POS" placeholder="POS" required />

<?php
mysql_connect('localhost', 'root', '');
mysql_select_db('ishop');

$sql = "SELECT DISTINCT POS FROM tbl_st";
$result = mysql_query($sql);

echo "<select name='POS'>";
while ($row = mysql_fetch_array($result)) {
    echo "<option value='" . $row['POS'] ."'>" . $row['POS'] ."</option>";
}
echo "</select>";
?>


</td>
</tr>

Answer 1

试试这个

<td><input type="text" name="POS" placeholder="POS" required />

    <?php
        mysql_connect('localhost', 'root', '');
        mysql_select_db('ishop');

        $sql = "SELECT DISTINCT POS FROM tbl_st";
        $result = mysql_query($sql);

        echo "<select name='POS'>";
        while ($row = mysql_fetch_array($result))
        {
            ?>

            <option value="<?php echo $row['POS'] ?>"><?php echo  $row['POS'] ?></option>;
        <?php
        }
        echo "</select>";
    ?>


</td>