嗨，当用户单击下面的按钮时，我想更新 id 行，请帮忙，对我的英语不好表示歉意
index.php
<!doctype html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<a href="javascript:void(0)" onClick="updateId('1')">Id 1</a>
<a href="javascript:void(0)" onClick="updateId('2')">Id 2</a>
<a href="javascript:void(0)" onClick="updateId('3')">Id 3</a>
</body>
</html>
更新.php
<?php
include('database_connection.php');
$update = "UPDATE id SET id = id + 1 WHERE id = updateId";
if (mysqli_query($connect, $update)) {
echo "Record updated successfully";
} else {
echo "Error updating record: " . mysqli_error($connect);
}
?>
在你的index.php文件中
<!doctype html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<a href="javascript:void(0)" onClick="updateId('1')">Id 1</a>
<a href="javascript:void(0)" onClick="updateId('2')">Id 2</a>
<a href="javascript:void(0)" onClick="updateId('3')">Id 3</a>
</body>
</html>
<script>
function updateId(id)
{
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
{
alert(xmlhttp.responseText);
}
};
xmlhttp.open("GET", "update.php?id=" +id, true);
xmlhttp.send();
}
</script>
在你的 update.php 中
<?php
if(!empty($_GET['id']))
{
$id = $_GET['id'];
include('database_connection.php');
$update = "UPDATE id SET id = id + 1 WHERE id = ?";
$connect->execute_query($update, [$id]);
}