如何使用有限数量的可见页面以及上一页和下一页按钮实现分页

Question

我用 PHP 编写了一个分页代码，它可以一次显示所有页码。我想限制脚本显示的页数，因此当有 200 页时，选择第一页时只有前 10 页可见。然后我想添加上一页和下一页按钮以在活动页面之间切换。

<style>
    .btn-page{
        padding:5px 10px; 
        border: #CCC 1px solid; 
        background:#FFF; 
        border-radius:4px;
        cursor:pointer;
        }
    .btn-page:hover{background:#F0F0F0;}
    .btn-page.current{background:#ABB2B9;}
</style>

/* Pagination Code starts */
$per_page_html = '';
$page = 1;
$start=0;
if(!empty($_POST["page"])) {
    $page = $_POST["page"];
    $start=($page-1) * ROW_PER_PAGE;
}
$limit=" limit " . $start . "," . ROW_PER_PAGE;
$pagination_statement = $pdo_conn->prepare($sql);
$pagination_statement->bindValue(':keyword', '%' . $search_keyword . '%', PDO::PARAM_STR);
$pagination_statement->execute();

$row_count = $pagination_statement->rowCount();
if(!empty($row_count)){
    $per_page_html .= "<div style='text-align:center;margin:20px 0px;'>";
    $page_count=ceil($row_count/ROW_PER_PAGE);
    if($page_count>1) {
        for($i=1;$i<=$page_count;$i++){
            if($i==$page){
                $per_page_html .= '<input type="submit" name="page" value="' . $i . '" class="btn-page current" />';
            } else {
                $per_page_html .= '<input type="submit" name="page" value="' . $i . '" class="btn-page" />';
            }
        }
    }
    $per_page_html .= "</div>";
}

$query = $sql.$limit;
$pdo_statement = $pdo_conn->prepare($query);
$pdo_statement->bindValue(':keyword', '%' . $search_keyword . '%', PDO::PARAM_STR);
$pdo_statement->execute();
$result = $pdo_statement->fetchAll();

Answer 1

在for循环前后分别添加'Previous'和'Next'。

请看下面的代码：

<style>
.btn-page{
    padding:5px 10px; 
    border: #CCC 1px solid; 
    background:#FFF; 
    border-radius:4px;
    cursor:pointer;
    }
.btn-page:hover{background:#F0F0F0;}
.btn-page.current{background:#ABB2B9;}
</style>


/* Pagination Code starts */
$per_page_html = '';
$page = 1;
$start=0;
if(!empty($_POST["page"])) {
    $page = $_POST["page"];
    $start=($page-1) * ROW_PER_PAGE;
}
$limit=" limit " . $start . "," . ROW_PER_PAGE;
$pagination_statement = $pdo_conn->prepare($sql);
$pagination_statement->bindValue(':keyword', '%' . $search_keyword . '%', PDO::PARAM_STR);
$pagination_statement->execute();

$row_count = $pagination_statement->rowCount();
if(!empty($row_count)){
    $per_page_html .= "<div style='text-align:center;margin:20px 0px;'>";
    $page_count=ceil($row_count/ROW_PER_PAGE);
    if($page_count>1) {
        $prevpage = 1;
        $nextpage = $page_count;
        if($page_count> 10){
            $prevpage = ($page-5>0)?($page-5):1;
            $nextpage = ($page+5<=$page_count)?($page+5):$page_count;
        }
        if($page>1){
            $per_page_html .= '<button type="submit" name="page" value="1" class="btn-page" >First Page</button><button type="submit" name="page" value="'.($page-1).'" class="btn-page" >Previous Page</button>';
        } 
        for($i=$prevpage;$i<=$nextpage;$i++){
            if($i==$page){
                $per_page_html .= '<input type="submit" name="page" value="' . $i . '" class="btn-page current" />';
            } else {
                $per_page_html .= '<input type="submit" name="page" value="' . $i . '" class="btn-page" />';
            }
        }
        if($page<$page_count){
            $per_page_html .= '<button type="submit" name="page" value="'.($page+1).'" class="btn-page">Next Page</button><button type="submit" name="page" value="'.$page_count.'" class="btn-page" >Last Page</button>';
        }
    }
    $per_page_html .= "</div>";
}

$query = $sql.$limit;
$pdo_statement = $pdo_conn->prepare($query);
$pdo_statement->bindValue(':keyword', '%' . $search_keyword . '%', PDO::PARAM_STR);
$pdo_statement->execute();
$result = $pdo_statement->fetchAll();

编码愉快:)