PHP Bootstrap Dynamic Pagination

function pagination($limit,$adjacents,$rows,$page){
    $reqPage="";
    if(isset($_REQUEST["page"])&& $_REQUEST["page"]!="")
    $reqPage.="&page=".$_REQUEST["page"];
   
   
   

 $pagination='';
 if ($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
 $prev_='';
 $first='';
 $lastpage = ceil($rows/$limit);
 $next_='';
 $last='';
 if($lastpage > 1)
 {

 //previous button
 if ($page > 1)
 $prev_.= "<li><a class='page-numbers' href=\"?view=$prev$reqPage\">Previous</a></li>";
 else{
 //$pagination.= "<span class=\"disabled\">previous</span>";
 }

 //pages
 if ($lastpage < 5 + ($adjacents * 2)) //not enough pages to bother breaking it up
 {
 $first='';
 for ($counter = 1; $counter <= $lastpage; $counter++)
 {
 if ($counter == $page)
 $pagination.= "<li class=\"active\"><span>$counter</span></li>";
 else
 $pagination.= "<li><a class='page-numbers' href=\"?view=$counter$reqPage\">$counter</a></li>";
 }
 $last='';
 }
 elseif($lastpage > 3 + ($adjacents * 2)) //enough pages to hide some
 {
 //close to beginning; only hide later pages
 $first='';
 if($page < 1 + ($adjacents * 2))
 {
 for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
 {
 if ($counter == $page)
 $pagination.= "<li class=\"active\"><span>$counter</span></li>";
 else
 $pagination.= "<li><a class='page-numbers' href=\"?view=$counter$reqPage\">$counter</a></li>";
 }
 $last.= "<li><a class='page-numbers' href=\"?view=$lastpage$reqPage\">Last</a></li>";
 }

 //in middle; hide some front and some back
 elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
 {
 $first.= "<li><a class='page-numbers' href=\"?view=1$reqPage\">First</a></li>";
 for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
 {
 if ($counter == $page)
 $pagination.= "<li class=\"active\"><span>$counter</span></li>";
 else
 $pagination.= "<li><a class='page-numbers' href=\"?view=$counter$reqPage\">$counter</a></li>";
 }
 $last.= "<li><a class='page-numbers' href=\"?view=$lastpage$reqPage\">Last</a></li>";
 }
 //close to end; only hide early pages
 else
 {
 $first.= "<li><a class='page-numbers' href=\"?view=1$reqPage\">First</a></li>";
 for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
 {
 if ($counter == $page)
 $pagination.= "<li class=\"active\"><span>$counter</span></li>";
 else
 $pagination.= "<li><a class='page-numbers' href=\"?view=$counter$reqPage\">$counter</a></li>";
 }
 $last='';
 }

 }
 if ($page < $counter - 1)
 $next_.= "<li><a class='page-numbers' href=\"?view=$next$reqPage\">Next</a></li>";
 else{
 //$pagination.= "<span class=\"disabled\">next</span>";
 }
 $pagination = "<ul class=\"pagination pagination-sm\">".$first.$prev_.$pagination.$next_.$last;
 //next button

 $pagination.= "</ul>\n";
 }

return $pagination;
}