封装分页

tp 框架 放在ThinkPHP/Library/org/util/

<?php
// author wenl

namespace OrgUtil;

class Page{

public $page = 1; //当前页
public $page_num =3; //每页显示条数

public $count; //数据总条数
public $page_total; //总页数
public $limit = 0; //偏移量

public function __construct($count, $param = array()){

if(!empty($param)) $this->setParam($param);

$this->page = I('get.p') > 1 ? I('get.p') : 1;

$this->count = $count;

$this->page_total = ceil($this->count / $this->page_num);

$this->limit = ($this->page - 1) * $this->page_num;
}

public function setParam($param){

//每页显示条数
if($param['page_num']){
$this->page_num = $param['page_num'];
}

}

public function getPage(){

//起始页
$start = $this->page - 3;
if($start < 1) $start = 1;

//结束页
$end = $start + 6;
if($end > $this->page_total) $end = $this->page_total;

//循环拼接页码数
$page_str = '';
for($i = $start; $i<= $end; $i++){
if($this->page == $i){
$page_str .= '<span class="current" id="nowPage">'.$i.'</span> ';
}else{
$page_str .= '<a href="javascript:void(0)" class="page" opt="'.$i.'">'.$i.'</a> ';
}
}

//上一页
$prev = $this->page - 1 > 1 ? $this->page - 1 : 1;
$prev_str = '<a href="javascript:void(0)" class="page" opt="'.$prev.'">上一页</a> ';

//下一页
$next = $this->page + 1 > $this->page_total ? $this->page_total : $this->page + 1;
$next_str = '<a href="javascript:void(0)" class="page" opt="'.$next.'">下一页</a> ';

//自定义页码数
$box = '<input type="text" size="2" id="page" onkeyup="go(this)" value="'.$this->page.'"/><a href="javascript:void(0)" class="page" opt="" id="go">GO</a> ';

$str = ' |总页数：'.$this->page_total;

$script = '<script>function go(obj){document.getElementById("go").attributes["opt"].nodeValue = obj.value;}</script>';

//当前页大于1，展示上一页
if($this->page > 1) $page_str = $prev_str.$page_str;

//当前页小于总页数，展示下一页
if($this->page < $this->page_total) $page_str = $page_str.$next_str;

return $page_str.$box.$str.$script;

}
}