SimplePaginator class.

SimplePaginator.php

<?php

class SimplePaginator
{
    protected $pageCount;

    protected $pageRangeLength = 5;

    public function __construct($pageCount, $pageRangeLength)
    {
        $this->pageCount = $pageCount;
        $this->pageRangeLength = $pageRangeLength;
    }

    public function getPageRange($currentPage)
    {
        $pageRangeLength = min($this->pageCount, $this->pageRangeLength);
        $firstPage = max(1, min(
            $currentPage - floor($pageRangeLength / 2),
            $this->pageCount - $pageRangeLength + 1
        ));

        return range($firstPage, $firstPage + $pageRangeLength - 1);
    }
}