Php Mysql在单击元素时删除表中的条目
我正在尝试创建一个表来管理上传的音乐,我希望这样,当用户按下“删除”时,它会删除条目。这是我正在使用的代码Php Mysql在单击元素时删除表中的条目,php,jquery,mysql,Php,Jquery,Mysql,我正在尝试创建一个表来管理上传的音乐,我希望这样,当用户按下“删除”时,它会删除条目。这是我正在使用的代码 <?php $sql="SELECT * FROM content WHERE `uploader` = '" . $user_data['username'] . "' ORDER BY id DESC"; $records=mysql_query($sql); while($sound=mysql_fetch_assoc($records)){ echo "<tr
<?php
$sql="SELECT * FROM content WHERE `uploader` = '" . $user_data['username'] . "' ORDER BY id DESC";
$records=mysql_query($sql);
while($sound=mysql_fetch_assoc($records)){
echo "<tr class='adder'>";
echo "<td width='40' class='player'> <a href='".$sound['link']."' class='sm2_button'>Play/</a></td>";
echo '<td width="75" class="name">'.$sound['date'].'</td>';
echo '<td width="150" class="name">'.$sound['name'].'</td>';
echo "<td width='58' class='bpm'>".$sound['uploader']."</td>";
echo "<td width='220' class='keywords'>".$sound['keywords']."</td>";
echo "<td width='50' class='keywords'>Edit</td>";
echo "<td width='50' class='keywords'><span onclick='mysql_query('DELETE FROM content WHERE id = ".$sound['id']." ')>Delete</span></td>";
echo "</tr>";
}
?>
我不是php开发人员,但我相信您应该向服务器提交数据。您的代码似乎只是在打印
'mysql_query('DELETE FROM content WHERE id=“.$sound['id']”中的DELETE)
转到html页面
你应该做的是
通过POST或GET示例(deleteSound.php?soundId=1)向服务器提交数据
deleteSound.php然后将使用php代码(服务器代码)删除id=1的声音
删除声音后,将其重定向回原始页面(soundlist.php)
使用ajax尝试下面的代码
viewContent.php
<?php
$sql="SELECT * FROM content WHERE `uploader` = '" . $user_data['username'] . "' ORDER BY id DESC";
$records=mysql_query($sql);
while($sound=mysql_fetch_assoc($records)){
?>
<tr class='adder'>
<td width='40' class='player'> <a href='<?php echo $sound['link']; ?>' class='sm2_button'>Play/</a></td>
<td width="75" class="name"><?php echo $sound['date']; ?></td>
<td width="150" class="name"><?php echo $sound['name']; ?></td>
<td width='58' class='bpm'><?php echo $sound['uploader']; ?></td>
<td width='220' class='keywords'><?php echo $sound['keywords']; ?></td>
<td width='50' class='keywords'>Edit</td>
<td width='50' class='keywords'><span onclick='deleteContent(<?php echo $sound['id']; ?>)'>Delete</span></td>
</tr>
}
?>
<script>
function deleteContent(id)
{
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
window.location="/viewContent.php";
}
}
xmlhttp.open("GET","deleteContent.php?q="+id,true);
xmlhttp.send();
}
</script>
<?php
$id=$_GET['id'];
mysql_query('DELETE FROM content WHERE id = ".$id." ')
echo "done";
?>
编辑
这真的很简单
创建一个名为process.php的页面
<?php
// include your connection file
$id = "0";
if (isset($_GET['id'])) {
$id = $_GET['id'];
}
try {
$sql = "DELETE FROM table-name WHERE id=:id";
$stmt = $conn->prepare($sql);
$stmt->bindValue(':id', $id, PDO::PARAM_INT);
$stmt->execute();
} catch (PDOException $e) {
die("Could not delete from the table: " . $e->getMessage());
}
$GoTo = "/the/path/where/you/want/to/send/the/visitor.php";
header(sprintf("Location: %s", $GoTo));
?>
那就换一行
echo "<td width='50' class='keywords'><span onclick='mysql_query('DELETE FROM content WHERE id = ".$sound['id']." ')>Delete</span></td>";
echo”我刚刚重申了一个更安全的方法是使用$\u POST…通过使用$\u GET,任何用户都可以通过更改“process.php?id=x”删除另一个用户条目
我不得不用一个表单按钮来做这个
表格行:
echo "<td width='50' class='keywords'><form name='deletesound' class='deletesound' method='post' action='process.php'>
<?php
ob_start();
include 'core/init.php';
include 'includes/header.php';
protect_page();
$id = $_POST['getid'];
if (isset($_POST['getid'])) {
$id = $_POST['getid'];
mysql_query("DELETE FROM content WHERE id = $id");
header('Location: manage.php');
exit();
}
?>
echo”
“
process.php:
echo "<td width='50' class='keywords'><form name='deletesound' class='deletesound' method='post' action='process.php'>
<?php
ob_start();
include 'core/init.php';
include 'includes/header.php';
protect_page();
$id = $_POST['getid'];
if (isset($_POST['getid'])) {
$id = $_POST['getid'];
mysql_query("DELETE FROM content WHERE id = $id");
header('Location: manage.php');
exit();
}
?>
echo“删除";
Try this您还没有关闭onclick函数末尾和之前的单引号>php中不推荐使用可能重复的mysql模块。最佳实践是使用。您不应该使用mysql_*函数,因为它们已被弃用。另外,您还没有在PHP中定义$sound
。假设您的意思是$id
而不是$sound['id']
,那么您的代码可以接受SQL注入。这只是演示ajax功能的示例代码。无法解释使用PDO等进行代码优化,因为它超出了本问题的范围。辩护地说,我的意思是$id,对于那个错误我很抱歉。我不同意。您提供了一个答案,所以在某种意义上,它是您的代码。这是您建议OP在其服务器上执行的操作,因此您应该采取预防措施,使其免受常见攻击,并且不要使用不推荐使用的功能。感谢您向正确的方向发送此消息!流程页面出现了一些问题simpler@Jeff如果这个答案对你有帮助并且回答了你的问题,请不要忘记。另请参见和。