php后台内部搜索功能

<?php
// 连接数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

$conn = new mysqli($servername, $username, $password, $dbname);

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

// 获取搜索关键字
$searchQuery = $_GET['q'];

// 构建SQL查询
$sql = "SELECT * FROM articles WHERE title LIKE '%$searchQuery%' OR content LIKE '%$searchQuery%'";

$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "标题: " . $row["title"]. " - 内容: " . $row["content"]. "<br>";
    }
} else {
    echo "没有找到结果";
}

$conn->close();
?>

$stmt = $conn->prepare("SELECT * FROM articles WHERE title LIKE ? OR content LIKE ?");
$searchQuery = "%$searchQuery%";
$stmt->bind_param("ss", $searchQuery, $searchQuery);
$stmt->execute();
$result = $stmt->get_result();

$sql = "SELECT * FROM articles WHERE title LIKE '%$searchQuery%' OR content LIKE '%$searchQuery%' ORDER BY relevance DESC";