php分页类代码
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php分页类代码
/*
* PHP分页类
* @package Page
* @Created 2013-03-27
* @Modify 2013-03-27
* @link
* Example:
$myPage=new Pager(1300,intval($CurrentPage));
$pageStr= $myPage->GetPagerContent();
echo $pageStr;
*/
class Pager {
private $pageSize = 10;
private $pageIndex;
private $totalNum;
private $totalPagesCount;
private $pageUrl;
private static $_instance;
public function __construct($p_totalNum, $p_pageIndex, $p_pageSize = 10,$p_initNum=3,$p_initMaxNum=5) {
if (! isset ( $p_totalNum ) || !isset($p_pageIndex)) {
die ( "pager initial error" );
}
$this->totalNum = $p_totalNum;
$this->pageIndex = $p_pageIndex;
$this->pageSize = $p_pageSize;
$this->initNum=$p_initNum;
$this->initMaxNum=$p_initMaxNum;
$this->totalPagesCount= ceil($p_totalNum / $p_pageSize);
$this->pageUrl=$this->_getPageUrl();
$this->_initPagerLegal();
}
/**
* 获取去除page部分的当前URL字符串
*
* @return String URL字符串
*/
private function _getPageUrl() {
$CurrentUrl = $_SERVER["REQUEST_URI"];
$arrUrl = parse_url($CurrentUrl);
$urlQuery = $arrUrl["query"];
if($urlQuery){
$urlQuery = ereg_replace("(^|&)page=" . $this->pageIndex, "", $urlQuery);
$CurrentUrl = str_replace($arrUrl["query"], $urlQuery, $CurrentUrl);
if($urlQuery){
$CurrentUrl.="&page";
}
else $CurrentUrl.="page";
} else {
$CurrentUrl.="?page";
}
return $CurrentUrl;
}
/*
*设置页面参数合法性
*@return void
*/
private function _initPagerLegal()
{
if((!is_numeric($this->pageIndex)) || $this->pageIndex<1)
{
$this->pageIndex=1;
}elseif($this->pageIndex > $this->totalPagesCount)
{
$this->pageIndex=$this->totalPagesCount;
}
}
//$this->pageUrl}={$i}
//{$this->CurrentUrl}={$this->TotalPages}
public function GetPagerContent() {
$str = "