php下拉菜单从数据库中删除

Question

我试图从下拉菜单中选择新闻事件，从数据库中删除新闻事件。当用户选择新闻标题并按下提交按钮时，应从相关表中删除新闻项。无论我尝试什么，我都无法正常工作。对不起，我是PHP的新手。 有人可以帮忙吗？这是下拉菜单：

    $sql="SELECT newstitle FROM $tbl_name";
    $result=mysql_query($sql);
    ?>

    <select name="select1">
    <?php
    while ($row = mysql_fetch_array($result, MYSQL_ASSOC)){
    ?>
    <option value="<?php echo $row['newstitle'];?>"> <?php echo $row['newstitle'];?>         </option>

    <?php
    }
    ?>
    </select>


    <td><center><input type="submit" name="delete" value="delete"></center></td>

按下按钮时，我还要从数据库中删除此代码吗？

    $delete=$_POST['delete'];
    $delete = mysql_real_escape_string($delete);

    mysql_query ("DELETE FROM $tbl_name WHERE newstitle='$delete'") or die ("Error- news has not been deleted");
        echo "News has been deleted";
        header("Location: newsdeleted.php");

Answer 1

您的删除脚本未设置
• $tbl_name。
• 请阅读有关SQL注入，过滤输入，转义查询的信息
• 你应该使用PHP PDO而不是旧的mysql funcs
• 除非您已经输出到stdout，否则您的标题行将无效。
• 您的选择输入称为select1而不是delete

Answer 2

// Your check for the "delete" submit value goes here
// Submit name and value are both 'delete'
if (isset($_POST['delete']) && $_POST['delete'] == 'delete') {
  // This is the value passed from the form (use select element's name)
  $selected_newstitle = $_POST['select1'];
  ...
}