PHP 쇼핑몰 구축: 상품 검색 및 정렬 기능 구현

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

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

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

<form action="search.php" method="get">
    <input type="text" name="keyword" placeholder="请输入关键字">
    <input type="submit" value="搜索">
</form>

<?php
if(isset($_GET['keyword'])) {
    $keyword = $_GET['keyword'];
    
    $sql = "SELECT * FROM products WHERE name LIKE '%$keyword%'";
    $result = $conn->query($sql);
    
    if ($result->num_rows > 0) {
        while($row = $result->fetch_assoc()) {
            echo "商品名称: " . $row['name']. " - 价格: " . $row['price']. "<br>";
        }
    } else {
        echo "没有找到相关商品";
    }
}
?>

<a href="sort.php?sortby=price">按价格排序</a>
<a href="sort.php?sortby=name">按名称排序</a>

<?php
if(isset($_GET['sortby'])) {
    $sortby = $_GET['sortby'];
    
    if($sortby == 'price') {
        $sql = "SELECT * FROM products ORDER BY price ASC";
    } elseif($sortby == 'name') {
        $sql = "SELECT * FROM products ORDER BY name ASC";
    }
    
    $result = $conn->query($sql);
    
    if ($result->num_rows > 0) {
        while($row = $result->fetch_assoc()) {
            echo "商品名称: " . $row['name']. " - 价格: " . $row['price']. "<br>";
        }
    } else {
        echo "没有找到相关商品";
    }
}
?>