[英]DELETE FROM table WHERE ID='$id' — Variable refuses to stick
Trying to perform a very simple task here. 在这里尝试执行一个非常简单的任务。
I have an <ol>
that contains 4 rows of data in some handy <li>
s. 我有一个
<ol>
,其中包含一些方便使用的<li>
s中的4行数据。 I want to add a delete button to remove the row from the table. 我想添加一个删除按钮以从表中删除行。 The script in delete.php appears to have finished, but the row is never removed when I go back and check dashboard.php and PHPMyAdmin for the listing.
delete.php中的脚本似乎已经完成,但是当我返回并检查dashboard.php和PHPMyAdmin中的列表时,该行从未删除。
Here's the code for the delete button (inside PHP): 这是删除按钮的代码(在PHP内部):
Print "<form action=delete.php method=POST><input name=".$info['ID']." type=hidden><input type=submit name=submit value=Remove></form>";
Moving on to delete.php: 继续删除.php:
<?
//initilize PHP
if($_POST['submit']) //If submit is hit
{
//then connect as user
//change user and password to your mySQL name and password
mysql_connect("mysql.***.com","***","***") or die(mysql_error());
//select which database you want to edit
mysql_select_db("shpdb") or die(mysql_error());
//convert all the posts to variables:
$id = $_POST['ID'];
$result=mysql_query("DELETE FROM savannah WHERE ID='$id'") or die(mysql_error());
//confirm
echo "Patient removed. <a href=dashboard.php>Return to Dashboard</a>";
}
?>
Database is: shpdb Table is: savannah 数据库是:shpdb表是:萨凡纳
Ideas? 有想法吗?
It's refusing to stick because you're calling it one thing and getting it with another. 它拒绝坚持,因为您将其称为一件事,而将其与另一件事联系在一起。 Change:
更改:
"<input name=".$info['ID']." type=hidden>"
to 至
"<input name=ID value=".$info['ID']." type=hidden>"
because in delete.php you're trying to access it with: 因为在delete.php中,您尝试通过以下方式访问它:
$id = $_POST['ID'];
You should really quote attribute values as well ie: 您还应该真正引用属性值,即:
print <<<END
form action="delete.php" method="post">
<input type="hidden" name="ID" value="$info[ID]">
<input type="submit" name="submit" value="Remove">
</form>
END;
or even: 甚至:
?>
form action="delete.php" method="post">
<input type="hidden" name="ID" value="<?php echo $info['ID'] ?>">
<input type="submit" name="submit" value="Remove">
</form>
<?
Just another point I'd like to make. 我想提出的另一点是。 I'm 95% sure that you can't give an input a numeric name/id attribute.
我95%的确定您不能为输入提供数字名称/ id属性。 It has to be like "id_1" not "1".
它必须像“ id_1”而不是“ 1”。
Also with php you can do arrays. 也可以用php做数组。
So you could do this 所以你可以这样做
<input name="delete[2]">
then in your php 然后在你的PHP
if(isset($_POST['delete']))
foreach($_POST['delete'] as $key=>$val)
if($_POST['delete'][$key]) delete from table where id = $val
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