PHP分页类的使用

PHP分页类的使用

page.class.php

	class Page {
		private $total_rows;//数据库总条数
		private $per_page_rows;//每页显示条数
		private $limit;
		private $uri;
		private $total_pages;//总页数
		private $config=array("header"=>"记录条数","prev"=>"上一页","next"=>"下一页","first"=>"首 页","last"=>"尾 页");
		private $list_length=8;
		public function __construct($total_rows,$per_page_rows=10,$url_args){
			$this->total_rows=$total_rows;
			$this->per_page_rows=$per_page_rows;
			$this->uri=$this->get_uri($url_args);
			$this->page = !empty($_GET['page']) ? $_GET['page'] : 1;
			$this->total_pages=ceil($this->total_rows/$this->per_page_rows);
			$this->limit=$this->set_limit();
		}
		private function set_limit() {
			return "limit ".($this->page-1)*$this->per_page_rows.",{$this->per_page_rows}";
		}
		private function get_uri($url_args) {
			$url=$_SERVER["REQUEST_URI"].(strpos($_SERVER["REQUEST_URI"],"?") ? "" : "?").$url_args;
			$parse=parse_url($url);
			if (isset($parse['query'])) {
				parse_str($parse['query'],$params);//把url字符串解析为数组
				unset($params['page']);//删除数组下标为page的值
				$url=$parse['path'].'?'.http_build_query($params);//再次构建url
			}
				return $url;
		}
		public function __get($args) {
			if ($args=="limit") {
				return $this->limit;
			}else{
				return null;
			}
		}
		private function start_page(){
			if ($this->total_rows==0) {
				return 0;
			}else{
				return (($this->page-1)*$this->per_page_rows)+1;
			}
		}
		private function end_page(){
			return min($this->page*$this->per_page_rows,$this->total_rows);
		}
		private function go_first() {
			$html="";
			if ($this->page==1) {
				$html.=" {$this->config['first']} ";
			}else{
				$html.=" {$this->config['first']} ";
			}
			return $html;
		}
		private function go_prev() {
			$html="";
			if ($this->page==1) {
				$html.=" {$this->config['prev']} ";
			}else{
				$html.=" {$this->config['prev']} ";
			}
			return $html;
		}
		private function go_next() {
			$html="";
			if ($this->page==$this->total_pages) {
				$html.=" {$this->config['next']} ";
			}else{
				$html.=" {$this->config['next']} ";
			}
			return $html;
		}
		private function go_last() {
			$html="";
			if ($this->page==$this->total_pages) {
				$html.=" {$this->config['last']} ";
			}else{
				$html.=" {$this->config['last']} ";
			}
			return $html;
		}
		private function go_page() {
			return '  ';
		}
		private function page_list() {
			$link_page="";
			$i_num=floor($this->list_length/2);
			for ($i = $i_num; $i >= 1; $i--) {
				$page=$this->page-$i;
				if ($page					continue;
				}else{
					$link_page.=" {$page} ";
				}
			}
			$link_page.=" {$this->page} ";
			for ($i = 1; $i 				$page=$this->page+$i;
				if ($pagetotal_pages) {
					$link_page.=" {$page} ";
				}else{
					break;
				}
			}
			return $link_page;
		}
		public function out_page($display=array(0,1,2,3,4,5,6,7,8)) {
			$display_html='';
			$html[0]=" 共有{$this->total_rows}{$this->config['header']} ";
			$html[1]=" 每页显示".($this->end_page()-$this->start_page()+1)."条,本页显示从{$this->start_page()}--{$this->end_page()}{$this->config['header']} ";
			$html[2]=" {$this->page}/{$this->total_pages}页 ";
			$html[3]=$this->go_first();
			$html[4]=$this->go_prev();
			$html[5]=$this->page_list();
			$html[6]=$this->go_next();
			$html[7]=$this->go_last();
			$html[8]=$this->go_page();
			foreach ($display as $index){
				$display_html.=$html[$index];
			}
			return $display_html;
		}
	}
?>

page_demo.php

header("content-type:text/html;charset=utf-8");
require_once './page.class.php';
require_once '../config/config.db.php';
//数据库中的总条数:total_rows;
//每一页显示的条数:per_page_rows
	$sql="select * from cp_sd_day";
	$rt=mysql_query($sql);
	$total_rows=mysql_num_rows($rt);
	$per_page_rows=10;

	$page=new Page($total_rows,$per_page_rows);
	$sql="select * from cp_sd_day {$page->limit}";
	$rt=mysql_query($sql);
	echo '';	echo '';	while (!!$row=mysql_fetch_assoc($rt)) {		echo '';			echo '';			echo '';			echo '';			echo '';			echo '';		echo '';	}	echo '';	echo 'cp_sd_day

'.$row['date_no'].'
'.$row['max_notwin'].'
'.$row['sum_last_miss'].'
'.$row['last_miss'].'
'.$row['last_miss_sort'].'



'.$page->out_page(array(2,3,4,5,6,7,8)).'

';
?>