PHP quite simple paging class_PHP tutorial

class Helper_Page{

/**Total number of messages*/
var $infoCount;
/**Total pages*/
var $pageCount;
/**Number of items displayed per page*/
var $items;
/**Current page number*/
var $pageNo;
/**The starting position of the query*/
var $startPos;
/**Next page*/
var $nextPageNo;
/**Previous page*/
var $prevPageNo;

function Helper_Page($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;
}
/**
* Next page
*/
function GoToNextPage()
{
$nextPageNo = $this->pageNo + 1;
if ($nextPageNo > $this->pageCount)
{
$this->nextPageNo = $this->pageCount;
return false;
}
$this->nextPageNo = $nextPageNo;
return true;
}
/**
* Previous page
*/
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;
}
}

http://www.bkjia.com/PHPjc/319494.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/319494.htmlTechArticleclass Helper_Page{ /**Total number of messages*/ var $infoCount; /**Total pages*/ var $pageCount; /**Number of items displayed per page*/ var $items; /**Current page number*/ var $pageNo; /** 查询的起始位置...