function paginator($totalPages,$currentPage)
{
    if($currentPage > $totalPages)
        return false;
    $aheadmin = max(1,$currentPage - ($totalPages - $currentPage > 3 ? 2 : (5 - ($totalPages - $currentPage) -1)));

    if($aheadmin - 1 > 1)
    {
        $str = '1 ... ';
        $aftermax = min($currentPage + 2,$totalPages);
    }
    else if($aheadmin - 1 > 0)
    {
        $str = '1 ';
        $aftermax = min($currentPage + 1,$totalPages);
    }
    else
    {
        $str = '';
        $aftermax = min(5,$totalPages);
    }

    for($i = $aheadmin; $i <= $aftermax; $i++)
    {
        $str .= $i . ' ';
    }

    if($totalPages - $aftermax > 1)
        $str .= '.. ' . $totalPages;
    else if($totalPages - $aftermax > 0)
        $str .= $totalPages;
    return $str;
}
echo 'Total Pages:';
$total = trim(fgets(STDIN));
while(true)
{
    echo 'CurrentPage:';
    $current = trim(fgets(STDIN));
    echo paginator($total,$current) . "\r\n";
}

该分页函数第一个参数为总页数，第二个参数为当前页数

命令行运行上述代码即可看到效果