我怎样才能做出好的分页？

Question

到目前为止我有这个：

<?php  
    $sql = "SELECT COUNT(id_noticia) FROM noticias, categorias, usuarios WHERE noticias.estado = 1 AND noticias.id_categoria = categorias.id_categoria AND categorias.estado = 1 AND noticias.id_usuario = usuarios.id_usuario AND noticias.id_categoria = '".$id_cat."'";  
    $rs_result = mysqli_query($con, $sql);
    $row = mysqli_fetch_row($rs_result);
    $total_records = $row[0];
    $total_pages = ceil($total_records / $limit);
    echo "<ul class='pagination'>";
        if($pag != '1'){
            $pagAnt = ($pag - 1);
            echo "<li><a href='valle/".$id_cat."/".$pagAnt."'><i class='fa fa-angle-double-left'></i></a></li>";
        }
        for ($i=1; $i <= $total_pages; $i++) {
            if($pag == $i){
                $pagLink .= "<li class='active'><a>".$i."</a></li>";
            }else{
                $pagLink .= "<li><a href='valle/".$id_cat."/".$i."'>".$i."</a></li>";  
            }
        };
        echo $pagLink;
         if($pag != $total_pages){
             $pagSig = ($pag + 1);
             echo "<li><a href='valle/".$id_cat."/".$pagSig."'><i class='fa fa-angle-double-right'></i></a></li>";
         }
         echo "</ul>";
?>  

输出如下：

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |无限

我希望它的输出是这样的：

1 | 2 | 3 | 4 | ,,, | 9

如果我在第5页输出如下：

1 | ...... | 5 | ...... | 8

我该怎么做？