<?php

class PageUtil
{
    const DEFAULT_PAGE = 1;
    const DEFAULT_PAGE_SIZE = 10;

    /***
     * @param $params
     * @param string $key
     * @return int
     */
    public static function getCurrentPage($params, $key = 'page'): int
    {
        if (isset($params[$key]) && intval($params[$key]) > 0) {
            return intval($params[$key]);
        }
        return self::DEFAULT_PAGE;
    }

    /**
     * @param $params
     * @param string $key
     * @return int
     */
    public static function getPageSize($params, $key = 'pageSize'): int
    {
        if (isset($params[$key]) && intval($params[$key]) > 0) {
            return intval($params[$key]);
        }
        return self::DEFAULT_PAGE_SIZE;
    }

}