我想知道你是否可以帮助我在这里…我创建了一个链接分享网站，并设法在一个共享的链接上创建一个评论。
我想给你一个我想要实现的场景。例如，user_1的每条评论，只能被user_1和admin删除。
我明白，当"删除"它从php页面，它也必须从数据库中删除。你怎么能这么做?
//I pressume where I INSERTED my post's 'vales' I must DELETE them again from there??
//It is very much alike from reply.php's code where you INSERT the data into the database. Now I just want to delete it.
//I don't know if this code below is correct??
$sql = "DELETE FROM
posts(post_content,
post_date,
post_topic,
post_by)
WHERE ('" . $_POST['reply-content'] . "',
NOW(),
" . mysql_real_escape_string($_GET['id']) . ",
" . $_SESSION['user_id'] . ")";
$result = mysql_query($sql);
if(!$result)
{
echo 'Your reply has not been saved, please try again later.';
}
else
{
echo 'Your comment has been deleted!';
}
您的Delete查询有重大语法错误。你不能从表中删除单个字段——你不能。您只能删除整个记录。正确的语法是:
DELETE FROM sometable WHERE (...)
where子句也有错误。你没有做任何比较操作，只是列出一些值。还是一个语法错误。最像你想要这样(猜测你的帖子的表主键字段名):
DELETE FROM posts WHERE (post_id = $id);
您应该给出您的注释ID，并简单地执行delete from posts where ID = $id。
当前的SQL语句甚至不会执行。
真正有用的是将表示逻辑与数据库逻辑与总线逻辑分离。逻辑。尝试MVC模式，它使解析代码变得容易得多，并且只查看DB或表示或总线。逻辑代码。然后，我们可以专注于问题的答案张贴。