php 新闻内容修改

<?php
// 数据库连接信息
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "news_db";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 获取新闻ID和新的内容
$news_id = $_POST['news_id'];
$new_content = $_POST['new_content'];

// 更新新闻内容
$sql = "UPDATE news SET content='$new_content' WHERE id=$news_id";
if ($conn->query($sql) === TRUE) {
    echo "新闻内容更新成功";
} else {
    echo "错误: " . $sql . "<br>" . $conn->error;
}

// 关闭连接
$conn->close();
?>

$stmt = $conn->prepare("UPDATE news SET content=? WHERE id=?");
$stmt->bind_param("si", $new_content, $news_id);
$stmt->execute();

$new_content = htmlspecialchars($_POST['new_content']);
$new_content = trim($new_content);

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}