PHP 検索結果ページのデザインと実装のスキル

<form action="search.php" method="GET">
    <input type="text" name="keyword" placeholder="请输入关键词">
    <button type="submit">搜索</button>
</form>

<?php
if(isset($_GET['keyword'])){
    $keyword = $_GET['keyword'];
    // 进行搜索操作，获取搜索结果
    // $results = perform_search($keyword);

    // 模拟搜索结果
    $results = array("结果1", "结果2", "结果3");

    if(count($results) > 0){
        foreach($results as $result){
            echo "<div>$result</div>";
        }
    } else {
        echo "未找到相关结果";
    }
}
?>

$results_per_page = 5;
if(isset($_GET['page'])){
    $page = $_GET['page'];
} else{
    $page = 1;
}

$start_index = ($page - 1) * $results_per_page;
$end_index = $start_index + $results_per_page;

// 获取当前页的搜索结果
$page_results = array_slice($results, $start_index, $results_per_page);

// 显示当前页的搜索结果
foreach($page_results as $result){
    echo "<div>$result</div>";
}

// 分页链接
$total_pages = ceil(count($results) / $results_per_page);
for($i = 1; $i <= $total_pages; $i++){
    echo "<a href='search.php?keyword=$keyword&page=$i'>$i</a>";
}

// 连接数据库
$connection = mysqli_connect("localhost", "username", "password", "database");

if(isset($_GET['keyword'])){
    $keyword = $_GET['keyword'];

    // 查询数据库中匹配关键词的内容
    $query = "SELECT * FROM articles WHERE title LIKE '%$keyword%' OR content LIKE '%$keyword%'";
    $result = mysqli_query($connection, $query);

    $results = array();
    while($row = mysqli_fetch_assoc($result)){
        $results[] = $row['title'];
    }
}

// 对搜索结果按匹配度排序
function sortByRelevance($results, $keyword){
    $relevance = array();
    foreach($results as $result){
        similar_text($result, $keyword, $percent);
        $relevance[$result] = $percent;
    }

    arsort($relevance);

    $sorted_results = array_keys($relevance);
    return $sorted_results;
}

// 使用排序函数
$results = sortByRelevance($results, $keyword);