Pagination Algo in PHP

pagination.php

<?php    
$pageCount = ceil( $counts['paginated'] / 10 );
$low = max(0, $currentPage - 5);
if ( $pageCount > 10 ) {
  $high = $currentPage + 5;
} else {
  $high = $pageCount - 1;
}
$high = (int)$high;
$pages = [];
for ( $i = $low; $i <= $high; $i++ ) {
  $pages[] = [
    'pageNum' => $i,
    'displayPageNum' => $i + 1,
    'active' => $i === $currentPage,
  ];
}
$this->view->addData("currentPage", $currentPage);
$this->view->addData("pages", $pages);
$this->view->addData("counts", $counts);