Php класс для постраничного деления (pogination)

 <?php

namespace Oddler\SOLib;


class pagination
{
    protected $_iLimitStart = 0;
    protected $_iLimit = 0;
    protected $_iStartShowing = 0;
    protected $_iEndShowing = 0;
    protected $_iTotalPages = 0;
    protected $_iActivePage = 0;

    /**
     * Pagination constructor.
     * @param int $iTotalItems
     * @param int $iItemsOnPage
     * @param int $iShowPages
     * @param int $iActivePage
     */
    function __construct(int $iTotalItems, int $iItemsOnPage, int $iShowPages, int $iActivePage = 1) {
        $iTotalPages = floor($iTotalItems / $iItemsOnPage);

        $this->_iLimitStart = 1;
        $this->_iLimit = $iItemsOnPage;
        $this->_iActivePage = $iActivePage;

        if ($iTotalPages > 1) {
            $iLeft = $iActivePage - 1;
            if ($iLeft < floor($iShowPages / 2)) {
                $iStart = 1;
            }
            else {
                $iStart = $iActivePage - floor($iShowPages / 2);
            }

            $iEnd = $iStart + $iShowPages - 1;
            if ($iEnd > $iTotalPages){
                $iStart -= ($iEnd - $iTotalPages);
                $iEnd = $iTotalPages;
                if ($iStart < 1) {
                    $iStart = 1;
                }
            }

            $this->_iTotalPages = $iTotalPages;
            $this->_iStartShowing = $iStart;
            $this->_iEndShowing = $iEnd;
            $this->_iLimitStart = $iActivePage * $iItemsOnPage;
        }
    }

    /**
     * Getter for LimitStart
     * @return int
     */
    public function getLimitStart(){
        return $this->_iLimitStart;
    }

    /**
     * Getter for Limit
     * @return int
     */
    public function getLimit(){
        return $this->_iLimit;
    }

    public function displayNavbar($sBaseUrl){
        $sPageUrl = $sBaseUrl.'?page=';
        $iActivePage = $this->_iActivePage;
        $iStart = $this->_iStartShowing;
        $iEnd = $this->_iEndShowing;
        $iTotalPages = $this->_iTotalPages;

        $sRet  = '<div id="soPagination"><span>Страницы: </span>';
        if ($iActivePage != 1) {
            $sUrl = $iActivePage == 2?$sBaseUrl:$sPageUrl.($iActivePage - 1);
            $sRet .= '<a href="'.$sBaseUrl.'" title="Первая страница">&lt;&lt;&lt;</a>';
            $sRet .= '<a href="'.$sUrl.'" title="Предыдущая страница">&lt;</a>';
        }
        for ($i = $iStart; $i <= $iEnd; $i++) {
            if($i == $iActivePage){
                $sRet .= '<span>'.$i.'</span>';
            }
            else {
                $sUrl = $i == 1?$sBaseUrl:$sPageUrl.$i;
                $sRet .= '<a href="'.$sUrl.'">'.$i.'</a>';
            }
        }
        if ($iActivePage != $iTotalPages){
            $sRet .= '<a href="'.$sPageUrl.($iActivePage + 1).'" title="Следующая страница">&gt;</a>';
            $sRet .= '<a href="'.$sPageUrl.$iTotalPages.'" title="Последняя страница">&gt;&gt;&gt;</a>';
        }

        $sRet .= '</div>';
        return $sRet;
    }
}

 <?php
error_reporting(E_ALL);
ini_set('display_errors', 'On');


require_once('vendor/autoload.php');
require_once('pagination.php');

use Oddler\Pdo\DBCore;
use Oddler\SOLib\pagination;
$DBCore = DBCore::getInstance();

$oDB1 = $DBCore->connect( array(
    'host'     => 'localhost',
    'user'     => 'USER',
    'password' => 'PASS',
    'database' => 'db_tests',
    'charset' => 'utf8',
    'database_type' => 'mysql'
));


$iActivePage = isset($_REQUEST['page'])?$_REQUEST['page']:10;
$iItemsOnPage = 7;
$iShowPages = 10;
$oDB1->setQuery('SELECT count(*) AS c FROM `tbl_pagination`');
$iTotalItems = $oDB1->loadObject()->c;

$oPagination = new pagination($iTotalItems, $iItemsOnPage, $iShowPages, $iActivePage);


$oDB1->setQuery('SELECT * FROM `tbl_pagination` LIMIT '.$oPagination->getLimitStart().', '.$oPagination->getLimit());
$aRows = $oDB1->loadObjectsList();
foreach ($aRows as $oRow) {
    echo '<b>'.$oRow->title.'</b>: '.$oRow->text.'<br />';
}


echo $oPagination->displayNavbar('/index.php');