PHP分页类
<?php // 禁止直接访问该页面 if ( basename ( $HTTP_SERVER_VARS [ 'PHP_SELF' ]) == "pager.class.php" ) { header( "HTTP/1.0 404 Not Found" ); } class Pager { /** 总信息数 */ var $infoCount ; /** 总页数 */ var $pageCount ; /** 每页显示条数 */ var $items ; /** 当前页码 */ var $pageNo ; /** 查询的起始位置 */ var $startPos ; var $nextPageNo ; var $prevPageNo ; function Pager( $infoCount , $items , $pageNo ) { $this ->infoCount = $infoCount ; $this ->items = $items ; $this ->pageNo = $pageNo ; $this ->pageCount = $this ->GetPageCount(); $this ->AdjustPageNo(); $this ->startPos = $this ->GetStartPos(); } function AdjustPageNo() { if ( $this ->pageNo == '' || $this ->pageNo < 1) $this ->pageNo = 1; if ( $this ->pageNo > $this ->pageCount) $this ->pageNo = $this ->pageCount; } /** * 下一页 */ function GoToNextPage() { $nextPageNo = $this ->pageNo 1; if ( $nextPageNo > $this ->pageCount) { $this ->nextPageNo = $this ->pageCount; return false; } $this ->nextPageNo = $nextPageNo ; return true; } /** * 上一页 */ function GotoPrevPage() { $prevPageNo = $this ->pageNo - 1; if ( $prevPageNo < 1) { $this ->prevPageNo = 1; return false; } $this ->prevPageNo = $prevPageNo ; return true; } function GetPageCount() { return ceil ( $this ->infoCount / $this ->items); } function GetStartPos() { return ( $this ->pageNo - 1) * $this ->items; } } ?>声明:本文来自网络,不代表【好得很程序员自学网】立场,转载请注明出处:http://haodehen.cn/did29584