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<?php |
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/* |
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* This file is part of the core-library package. |
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* |
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* (c) 2018 WEBEWEB |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Library\Core\Database\Helper; |
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/** |
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* Paginate helper. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Library\Core\Database\Helper |
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*/ |
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class PaginateHelper { |
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/** |
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* Get a page offset and limit. |
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* |
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* @param int $pageNumber The page number. |
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* @param int $divider The divider. |
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* @param int $total The total. |
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* @return int[] Returns the page offset and limit in case of success, -1 otherwise. |
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*/ |
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public static function getPageOffsetAndLimit($pageNumber, $divider, $total = -1) { |
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if ($pageNumber < 0 || $divider < 0) { |
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return -1; |
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} |
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$offset = $pageNumber * $divider; |
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$limit = $divider; |
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if (0 <= $total && ($total < $offset || $total < ($offset + $limit))) { |
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$offset = (static::getPagesCount($total, $divider) - 1) * $divider; |
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$limit = $total - $offset; |
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} |
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return [$offset, $limit]; |
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} |
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/** |
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* Get a pages count. |
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* |
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* @param int $linesNumber The lines number. |
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* @param int $divider The divider. |
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* @return int Returns the pages count in case of success, -1 otherwise. |
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*/ |
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public static function getPagesCount($linesNumber, $divider) { |
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if ($linesNumber < 0 || $divider < 0) { |
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return -1; |
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} |
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$pagesCount = intval($linesNumber / $divider); |
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if (0 < ($linesNumber % $divider)) { |
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++$pagesCount; |
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} |
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return $pagesCount; |
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} |
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} |
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webeweb /
core-library
