我在 PHP 页面中有以下代码，用于显示表中的数据。在最后一列中，我有一个删除按钮，它调用一个函数来从表中删除相应的行:
// Print data from db
$result = mysql_query("SELECT * FROM questions");
echo "<table border='1' align='center'>
<tr>
<th>ID</th>
<th>Multiple Choice Question</th>
<th>Correct answer</th>
<th>The Tip You Give</th>
<th>Edit Question</th>
<th>Delete Question</th>
</tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td align='center'>" . $row['ID'] . "</td>";
echo "<td>" . $row['Question'] . "</td>";
echo "<td align='center'>" . $row['Answer'] . "</td>";
echo "<td>" . $row['Help'] . "</td>";
echo "<td align='center'><button type='button' onclick='edit_question()'><img src='images/Edit.png'></button></td>";
echo "<td align='center'><button type='button' onclick='delete_question($row)'><img src='images/delete.png'></button></td>";
echo "</tr>";
}
echo "</table>";
函数如下:
<script>
function delete_question(int $row_id)
{
var r=confirm("Are you sure you want to delete this question?");
if (r==true)
{
alert('<?php
$con=mysql_connect("localhost","stesia","stesia","stesia");
// Check connection
if (mysql_errno())
{
echo "Failed to connect to MySQL: " . mysql_error();
}
mysql_query($con,"DELETE FROM questions WHERE ID='".$row_id."'");
echo "You want to delete the " . $row_id['ID'] . " question!";
echo "Question deleted!";
mysql_close($con);
?>');
}
else
{
alert("Question not deleted!");
}
}
</script>
问题是该函数被调用并显示消息，但该行没有被删除(也在 mysql 中检查过)。我尝试过一些事情但没有运气。我在这里做错了什么？
最佳答案
您无法在客户端执行此操作。您应该向服务器(PHP-)端发送 AJAX 请求来处理删除。
您可以在此处找到相关信息(虽然这些信息并未显示最佳实践，但有助于理解概念): PHP - AJAX and MySQL
关于php - 从按钮调用 PHP 函数以从表中删除行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16790312/