分页在第一页和最后一页上重复页面

Question

如果我在第 2 页 (?p=2) 这就是寻呼机的样子 Första « 1 2 3 » Sista 但是，如果我在第 1 页或第 3 页，它看起来像这样

(?p=1)1 2 3 3 » Sista

(?p=3)Första « 1 1 2 3

我做错了什么？ 我正在使用该网站上发布的另一个问题的逻辑，但似乎没有人像我一样遇到这个问题。 Limit pagination page number

function get_paging_info($tot_rows,$pp,$curr_page)
{

    $pages = ceil($tot_rows / $pp); // calc pages

    $data              = array();                  // start out array
    $data['si']        = ($curr_page * $pp) - $pp; // what row to start at
    $data['pages']     = $pages;                   // add the pages
    $data['curr_page'] = $curr_page;               // Whats the current page

    return $data; //return the paging data

}

function pagin($db,$sql,$limit,$curr_page,$max_pages=7)
{

    $res   = $db->query($sql);
    $count = $res->num_rows;

    $paging_info = get_paging_info($count,$limit,$curr_page);

    $out[] = "
        <nav aria-label='Page navigation'>
            <ul class='pagination'>";

    if($paging_info['curr_page'] > 1)
    {

        $out[] = "
            <li><a href='?p=1' title='Sida 1'>Första</a></li>
            <li>
                <a href='?p=". ($paging_info['curr_page'] - 1) ."' aria-label='Föregående'>
                    <span aria-hidden='true'>&laquo;</span>
                </a>
            </li>";

    }

    $max = $max_pages;
    if($paging_info['curr_page'] < $max)
    {

        $sp = 1;

    }
    elseif($paging_info['curr_page'] >= ($paging_info['pages'] - floor($max / 2)) )
    {

        $sp = $paging_info['pages'] - $max + 1;

    }
    elseif($paging_info['curr_page'] >= $max)
    {

        $sp = $paging_info['curr_page']  - floor($max/2);

    }

    if($paging_info['curr_page'] >= $max)
    {

        $out[] = "<li><a href='?p=1' title='Sida 1'>1</a></li>";

    }

    for($i = $sp; $i <= ($sp + $max -1);$i++)
    {

        if($i > $paging_info['pages']) continue;

        if($paging_info['curr_page'] == $i)
        {

            $out[] = "<li class='active'><span class='strong'>". $i ."</span></li>";

        }
        else
        {

            $out[] = "<li><a href='?p=". $i ."' title='Sida ". $i ."'>". $i ."</a></li>";

        }

    }

    if($paging_info['curr_page'] < ($paging_info['pages'] - floor($max / 2)))
    {

        $out[] = "<li><a href='?p=". $paging_info['pages'] ."' title='Sida ". $paging_info['pages'] ."'>". $paging_info['pages'] ."</a></li>";

    }

    if($paging_info['curr_page'] < $paging_info['pages'])
    {

        $out[] = "
            <li>
                <a href='?p=". ($paging_info['curr_page'] + 1) ."' aria-label='Nästa' title='Page ". ($paging_info['curr_page'] + 1) ."'>
                    <span aria-hidden='true'>&raquo;</span>
                </a>
            </li>
            <li><a href='?p=". $paging_info['pages'] ."' title='Sida ". $paging_info['pages'] ."'>Sista</a></li>";

    }

    $out[] = "</ul></nav>";
    return implode('',$out);

}

Answer 1

我认为您的问题是由于for 循环之前和之后的这两个条件：

第一：

if($paging_info['curr_page'] >= $max)
{
  $out[] = "<li><a href='?p=1' title='Sida 1'>1</a></li>";
}

第二：

if($paging_info['curr_page'] < ($paging_info['pages'] - floor($max / 2)))
{
  $out[] = "<li><a href='?p=". $paging_info['pages'] ."' title='Sida ". $paging_info['pages'] ."'>". $paging_info['pages'] ."</a></li>";
}

你不需要这个条件，因为相应的页面已经用for循环显示了。

Answer 2

试试这个。我已经从你的函数中删除了一些额外的代码。用以下代码替换您的 pagin 函数并尝试

function pagin($db,$sql,$limit,$curr_page,$max_pages=7)
{

    $res   = $db->query($sql);
    $count = $res->num_rows;

    $paging_info = get_paging_info($count,$limit,$curr_page);

    $out[] = "
        <nav aria-label='Page navigation'>
            <ul class='pagination'>";

    if($paging_info['curr_page'] > 1)
    {

        $out[] = "
            <li><a href='?p=1' title='Sida 1'>Första</a></li>
            <li>
                <a href='?p=". ($paging_info['curr_page'] - 1) ."' aria-label='Föregående'>
                    <span aria-hidden='true'>&laquo;</span>
                </a>
            </li>";

    }

    $max = $max_pages;
    if($paging_info['curr_page'] < $max)
    {

        $sp = 1;

    }
    elseif($paging_info['curr_page'] >= ($paging_info['pages'] - floor($max / 2)) )
    {

        $sp = $paging_info['pages'] - $max + 1;

    }
    elseif($paging_info['curr_page'] >= $max)
    {

        $sp = $paging_info['curr_page']  - floor($max/2);

    } 

    for($i = $sp; $i <= ($sp + $max -1);$i++)
    {

        if($i > $paging_info['pages']) continue;

        if($paging_info['curr_page'] == $i)
        {

            $out[] = "<li class='active'><span class='strong'>". $i ."</span></li>";

        }
        else
        {

            $out[] = "<li><a href='?p=". $i ."' title='Sida ". $i ."'>". $i ."</a></li>";

        }

    }

    if($paging_info['curr_page'] < $paging_info['pages'])
    {

        $out[] = "
            <li>
                <a href='?p=". ($paging_info['curr_page'] + 1) ."' aria-label='Nästa' title='Page ". ($paging_info['curr_page'] + 1) ."'>
                    <span aria-hidden='true'>&raquo;</span>
                </a>
            </li>
            <li><a href='?p=". $paging_info['pages'] ."' title='Sida ". $paging_info['pages'] ."'>Sista</a></li>";

    }

    $out[] = "</ul></nav>";
    return implode('',$out);

}