php模糊查询mysql数据库字段

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

// 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);
}

// 获取用户输入的关键字
$search_keyword = $_GET['keyword'];

// 构建模糊查询SQL语句
$sql = "SELECT * FROM table_name WHERE column_name LIKE '%$search_keyword%'";

// 执行查询
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出查询结果
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
    }
} else {
    echo "0 结果";
}
$conn->close();
?>

$stmt = $conn->prepare("SELECT * FROM table_name WHERE column_name LIKE ?");
$stmt->bind_param("s", $search_keyword);
$stmt->execute();
$result = $stmt->get_result();

$search_keyword = mysqli_real_escape_string($conn, $_GET['keyword']);