如何在分页中显示最多5个数字？

Question

我有一个分页,我想实现并限制为5页数,

见下文:

例子:

 PREVIOUS 1 2 3 4 5 NEXT
 PREVIOUS 20 21 22 23 ... 39 NEXT
 PREVIOUS 59 ... 81 82 83 84 NEXT

只需要显示五个页码.
我应该改变和修改哪部分代码？

我在组合方面遇到了麻烦.

 <?php
 /* Setup page vars for display. */
if ($page == 0) $page = 1;                  //if no page var is given, default to 1.
$prev = $page - 1;                          //previous page is page - 1
$next = $page + 1;                          //next page is page + 1
$lastpage = ceil($total_pages/$limit);      //lastpage is = total pages / items per page, rounded up.
$lpm1 = $lastpage - 1;                      //last page minus 1

/* 
    Now we apply our rules and draw the pagination object. 
    We're actually saving the code to a variable in case we want to draw it more than once.
*/
    $pagination = "";
    if($lastpage > 1)
    {   
        $pagination .= "<div class=\"pagination\">";
    //previous buttons
        if ($page > 1) 
            $pagination.= "<a class='buttons' href=\"$targetpage?page=$prev\">previous</a>";
        else
            $pagination.= "<a class='disabled'><buttons disabled>previous</buttons></a>";   

    //pages 
    if ($lastpage < 7 + ($adjacents * 2))   //not enough pages to bother breaking it up
    {   
        for ($counter = 1; $counter <= $lastpage; $counter++)
        {
            if ($counter == $page)
                $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
            else
                $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";                 
        }
    }
    elseif($lastpage > 5 + ($adjacents * 2))    //enough pages to hide some
    {
        //close to beginning; only hide later pages
        if($page < 1 + ($adjacents * 2))        
        {
            for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                else
                    $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";                 
            }
            $pagination.= "...";
            $pagination.= "<a class='buttons' href=\"$targetpage?page=$lpm1\">$lpm1</a>";
            $pagination.= "<a class='buttons' href=\"$targetpage?page=$lastpage\">$lastpage</a>";       
        }
        //in middle; hide some front and some back
        elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
        {
            $pagination.= "<a class='buttons' href=\"$targetpage?page=1\"> 1 </a>";
            $pagination.= "<a class='buttons' href=\"$targetpage?page=2\"> 2 </a>";
            $pagination.= "...";
            for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                else
                    $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";                 
            }
            $pagination.= "...";
            $pagination.= "<a class='buttons' href=\"$targetpage?page=$lpm1\">$lpm1</a>";
            $pagination.= "<a class='buttons' href=\"$targetpage?page=$lastpage\">$lastpage</a>";       
        }
        //close to end; only hide early pages
        else
        {
            $pagination.= "<a href=\"$targetpage?page=1\">1</a>";
            $pagination.= "<a href=\"$targetpage?page=2\">2</a>";
            $pagination.= "...";
            for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                else
                    $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";                 
            }
        }
    }

    //next buttons
    if ($page < $counter - 1) 
        $pagination.= "<a class='buttons' href=\"$targetpage?page=$next\">next</a>";
    else
        $pagination.= "<a class='buttons'>next</a>";
    $pagination.= "</div>\n";       
}
?>

我有问题跟踪显示页码的限制.

Answer 1

这对我有用。您必须将当前页码和总页数传递给该函数。

function pageRange(page,pageCount){

var start = page-2,
    end = page+2;

if(end>pageCount){
    start-=(end-pageCount);
    end=pageCount;
}
if(start<=0){
    end+=((start-1)*(-1));
    start=1;
}

end = end>pageCount?pageCount:end;

return {start:start, end:end};
}

编辑：看看我制作的这个小提琴https://jsfiddle.net/qsLp6ajL/2/