php简单分页类_PHP教程-PHP 튜토리얼-php.cn

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php简单分页类_PHP教程

Jul 13, 2016 pm 05:49 PM

class page php private 쪽수 매기기 질문 단순한 친절한

/**
* 分页类
* 2011/8/31
* kcj
* */
class Page{
    private $total;     //查询总的数据记录
    private $page;      //当前第几页
    //private $pagesize; //每页显示的条数
    private $pagenum;   //总共多少页
    private $num;       //每页显示记录的条数
    private $offset;    //从数据库中取记录的开始偏移数

    function __construct($total,$page=1,$num=5){
        $this->total=$total;
        $this->page=$page;
        $this->num=$num;
        $this->pagenum=$this->getPageNum();
        $this->offset=$this->getOffset();
    }
    private function getPageNum(){
        return ceil($this->total/$this->num);
    }
    private function getNextPage(){    //下一页
        if($this->page==$this->pagenum){
            return false;
        }else {
            return $this->page+1;
        }
    }
    private function getPrevPage(){
        if($this->page==1){            //上一页
            return false;
        }else {
            return $this->page-1;
        }
    }
    private function getOffset(){
        return ($this->page-1)*$this->num;
    }
    private function getStartNum(){
        if ($this->total==0) {
            return 0;
        }else {
            return $this->offset+1;
        }
    }
    private function getEndNum(){
        return min($this->offset+$this->num,$this->total);
    }
    public function getPageInfo(){
        $pageInfo=array(
         "row_total"=>$this->total,
         "row_num" =>$this->num,
         "page_num" =>$this->getPageNum(),
         "current_page"=>$this->page,
         "row_offset"=>$this->getOffset(),
         "next_page"=>$this->getNextPage(),
         "prev_page"=>$this->getPrevPage(),
         "page_start"=>$this->getStartNum(),
         "page_end" =>$this->getEndNum()
        );
        return $pageInfo;
    }
}
?>

摘自 chaojie2009的专栏