Question

我已经在自己的网站上为产品创建了搜索功能，并尝试进行分页，以便它不仅是一长串的结果。所以我开始时是这样的：

**注意：仅在本示例中，我用$_GET['search_term']替换了'whatever'，在有var_dump()的地方，我有一个函数可以显示数组中每个id的乘积已给出。

$term = 'whatever'; //$_GET['search_term'];
$new_term = '%'.$term.'%';

if(isset($_GET['page'])){
    $page = $_GET['page'];
}else{
    $page = 1;
}
$per_page = 20;
$last_page = ceil($resultCount/$per_page);
if($page<1){
    $page = 1;
}else if($page>$last_page){
    $page = $last_page;
}
$pagination = "";
$limit = "LIMIT ".($page-1)*$per_page.",".$per_page;
if($last_page!=1){
    if($page!=1){
        $prev = $page-1;
        $pagination .= "<a class='pagination' href='store'><<</a>";
        $pagination .= "<a class='pagination' href='store/$prev'><</a>";
    }
    for($i=$page-2; $i<=$page+2; $i++){
        if($i>0 && $i<=$last_page){
            if($i == $page){
                $pagination .= "<a class='pagination selected'>$i</a>";
            }else{
                $pagination .= "<a class='pagination' href='store/$i'>$i</a>";
            }
        }
    }
    if($page!=$last_page){
        $next = $page+1;
        $pagination .= "<a class='pagination' href='store/$next'>></a>";
        $pagination .= "<a class='pagination' href='store/$last_page'>>></a>";
    }
}

if(isset($term)){
    echo $pagination;
    $ids = [];
    $params = [$new_term];
    $sql = "SELECT * FROM products WHERE name LIKE ? $limit";
    $stmt = DB::run($sql,$params);
    $resultCount = $stmt->rowCount();
    if($resultCount > 0){
        while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
            $id = $row["pro_id"];
            $params3 = [$id];
            $sql3 = "SELECT * FROM products WHERE id=?";
            $stmt3 = DB::run($sql3,$params3);
            while($row = $stmt3->fetch(PDO::FETCH_ASSOC)){
                $id = $row["id"];
                array_push($ids,$id);
            }
        }
        var_dump($ids);
    }
    echo $pagination;
}

这很好，但是后来我想对其进行模糊搜索，所以我这样做了：

$term = 'whatever'; //$_GET['search_term'];
$new_term = '%'.$term.'%';

$params = [$new_term];
$sql = "SELECT * FROM products WHERE name LIKE ?";
$stmt = DB::run($sql,$params);
$resultCount = $stmt->rowCount();
if($resultCount < 1){
    $sql = "SELECT * FROM products";
    $stmt = DB::run($sql);
    while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
        $id = $row["pro_id"];
        $result = $row[$lang];
        similar_text($term,$result,$similarity);
        $similar_array[$similarity][] = $id;
    }
    $closest_match = array_keys($similar_array);
    rsort($closest_match);
    $match_count = count($closest_match);
    $similar_ids = [];
    for($i=0; $i<$match_count; $i++){
        foreach($similar_array[$closest_match[$i]] as $id){
            array_push($similar_ids,$id);
        }
    }
    $resultCount = count($similar_ids);
}

if(isset($_GET['page'])){
    $page = $_GET['page'];
}else{
    $page = 1;
}
$per_page = 20;
$last_page = ceil($resultCount/$per_page);
if($page<1){
    $page = 1;
}else if($page>$last_page){
    $page = $last_page;
}
$pagination = "";
$limit = "LIMIT ".($page-1)*$per_page.",".$per_page;
if($last_page!=1){
    if($page!=1){
        $prev = $page-1;
        $pagination .= "<a class='pagination' href='store'><<</a>";
        $pagination .= "<a class='pagination' href='store/$prev'><</a>";
    }
    for($i=$page-2; $i<=$page+2; $i++){
        if($i>0 && $i<=$last_page){
            if($i == $page){
                $pagination .= "<a class='pagination selected'>$i</a>";
            }else{
                $pagination .= "<a class='pagination' href='store/$i'>$i</a>";
            }
        }
    }
    if($page!=$last_page){
        $next = $page+1;
        $pagination .= "<a class='pagination' href='store/$next'>></a>";
        $pagination .= "<a class='pagination' href='store/$last_page'>>></a>";
    }
}

if(isset($term)){
    echo $pagination;
    $ids = [];
    $params = [$new_term];
    $sql = "SELECT * FROM products WHERE name LIKE ? $limit";
    $stmt = DB::run($sql,$params);
    $resultCount = $stmt->rowCount();
    if($resultCount > 0){
        while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
            $id = $row["pro_id"];
            $params3 = [$id];
            $sql3 = "SELECT * FROM products WHERE id=?";
            $stmt3 = DB::run($sql3,$params3);
            while($row = $stmt3->fetch(PDO::FETCH_ASSOC)){
                $id = $row["id"];
                array_push($ids,$id);
            }
        }
        var_dump($ids);
    }else{
        var_dump($similar_ids);
    }
    echo $pagination;
}

可能有更好的方法来做到这一点，但这就是我所拥有的。我的问题是，如何才能使分页在这里处理模糊结果（$similar_ids）？我在考虑某种可以根据页数拼接数组的函数，但是我不确定该如何处理。

Answer 1

这不能回答您的问题，但是我还是要说这些：

仔细观察，您在处理$limit时可能存在sql注入错误。
此外，使用搜索索引（如Apache Solr或ElasticSearch）将使您几乎免费获得分页。您可能需要调查一下。设置专用索引是蠕虫的另一种方法，是的，但是您也将有更多更好的选择来处理该模糊搜索部分。

PHP / SQL-模糊搜索结果的分页

1 个答案: