分页代码
<?php
/**
* 分页类
* @author xiaojiong & 290747680@qq.com
* @date 2011-08-17
*
* show(2) 1 ... 62 63 64 65 66 67 68 ... 150
* 分页样式
* #page{font:12px/16px arial}
* #page span{float:left;margin:0px 3px;}
* #page a{float:left;margin:0 3px;border:1px solid #ddd;padding:3px 7px; text-decoration:none;color:#666}
* #page a.now_page,#page a:hover{color:#fff;background:#05c}
*/
class core_lib_page
{
public $first_row; //起始行数
public $list_rows; //列表每页显示行数
protected $total_pages; //总页数
protected $total_rows; //总行数
protected $now_page; //当前页数
protected $method = 'defalut'; //处理情况 ajax分页 html分页(静态化时) 普通get方式
protected $parameter = '';
protected $page_name; //分页参数的名称
protected $ajax_func_name;
public $plus = 3; //分页偏移量
protected $url;
/**
* 构造函数
* @param unknown_type $data
*/
public function __construct($data = array())
{
$this->total_rows = $data['total_rows'];
$this->parameter = !empty($data['parameter']) ? $data['parameter'] : '';
$this->list_rows = !empty($data['list_rows']) && $data['list_rows'] <= 100 ? $data['list_rows'] : 15;
$this->total_pages = ceil($this->total_rows / $this->list_rows);
$this->page_name = !empty($data['page_name']) ? $data['page_name'] : 'p';
$this->ajax_func_name = !empty($data['ajax_func_name']) ? $data['ajax_func_name'] : '';
$this->method = !empty($data['method']) ? $data['method'] : '';
/* 当前页面 */
if(!empty($data['now_page']))
{
$this->now_page = intval($data['now_page']);
}else{
$this->now_page = !empty($_get[$this->page_name]) ? intval($_get[$this->page_name]):1;
}
$this->now_page = $this->now_page <= 0 ? 1 : $this->now_page;
if(!empty($this->total_pages) && $this->now_page > $this->total_pages)
{
$this->now_page = $this->total_pages;
}
$this->first_row = $this->list_rows * ($this->now_page - 1);
}
/**
* 得到当前连接
* @param $page
* @param $text
* @return string
*/
protected function _get_link($page,$text)
{
switch ($this->method) {
case 'ajax':
$parameter = '';
if($this->parameter)
{
$parameter = ','.$this->parameter;
}
return '<a onclick="' . $this->ajax_func_name . '(\'' . $page . '\''.$parameter.')" href="javascript:void(0)">' . $text . '</a>' . "\n";
break;
case 'html':
$url = str_replace('?', $page,$this->parameter);
return '<a href="' .$url . '">' . $text . '</a>' . "\n";
break;
default:
return '<a href="' . $this->_get_url($page) . '">' . $text . '</a>' . "\n";
break;
}
}
/**
* 设置当前页面链接
*/
protected function _set_url()
{
$url = $_server['request_uri'].(strpos($_server['request_uri'],'?')?'':"?").$this->parameter;
$parse = parse_url($url);
if(isset($parse['query'])) {
parse_str($parse['query'],$params);
unset($params[$this->page_name]);
$url = $parse['path'].'?'.http_build_query($params);
}
if(!empty($params))
{
$url .= '&';
}
$this->url = $url;
}
/**
* 得到$page的url
* @param $page 页面
* @return string
*/
protected function _get_url($page)
{
if($this->url === null)
{
$this->_set_url();
}
// $lable = strpos('&', $this->url) === false ? '' : '&';
return $this->url . $this->page_name . '=' . $page;
}
/**
* 得到第一页
* @return string
*/
public function first_page($name = '第一页')
{
if($this->now_page > 5)
{
return $this->_get_link('1', $name);
}
return '';
}
/**
* 最后一页
* @param $name
* @return string
*/
public function last_page($name = '最后一页')
{
if($this->now_page < $this->total_pages - 5)
{
return $this->_get_link($this->total_pages, $name);
}
return '';
}
/**
* 上一页
* @return string
*/
public function up_page($name = '上一页')
{
if($this->now_page != 1)
{
return $this->_get_link($this->now_page - 1, $name);
}
return '';
}
/**
* 下一页
* @return string
*/
public function down_page($name = '下一页')
{
if($this->now_page < $this->total_pages)
{
return $this->_get_link($this->now_page + 1, $name);
}
return '';
}
/**
* 分页样式输出
* @param $param
* @return string
*/
public function show($param = 1)
{
if($this->total_rows < 1)
{
return '';
}
$classname = 'show_' . $param;
$classnames = get_class_methods($this);
if(in_array($classname, $classnames))
{
return $this->$classname();
}
return '';
}
protected function show_2()
{
if($this->total_pages != 1)
{
$return = '';
$return .= $this->up_page('<');
for($i = 1;$i<=$this->total_pages;$i++)
{
if($i == $this->now_page)
{
$return .= "<a class='now_page'>$i</a>\n";
}
else
{
if($this->now_page-$i>=4 && $i != 1)
{
$return .="<span class='pagemore'>...</span>\n";
$i = $this->now_page-3;
}
else
{
if($i >= $this->now_page+5 && $i != $this->total_pages)
{
$return .="<span>...</span>\n";
$i = $this->total_pages;
}
$return .= $this->_get_link($i, $i) . "\n";
}
}
}
$return .= $this->down_page('>');
return $return;
}
}
protected function show_1()
{
$plus = $this->plus;
if( $plus + $this->now_page > $this->total_pages)
{
$begin = $this->total_pages - $plus * 2;
}else{
$begin = $this->now_page - $plus;
}
$begin = ($begin >= 1) ? $begin : 1;
$return = '';
$return .= $this->first_page();
$return .= $this->up_page();
for ($i = $begin; $i <= $begin + $plus * 2;$i++)
{
if($i>$this->total_pages)
{
break;
}
if($i == $this->now_page)
{
$return .= "<a class='now_page'>$i</a>\n";
}
else
{
$return .= $this->_get_link($i, $i) . "\n";
}
}
$return .= $this->down_page();
$return .= $this->last_page();
return $return;
}
protected function show_3()
{
$plus = $this->plus;
if( $plus + $this->now_page > $this->total_pages)
{
$begin = $this->total_pages - $plus * 2;
}else{
$begin = $this->now_page - $plus;
}
$begin = ($begin >= 1) ? $begin : 1;
$return = '总计 ' .$this->total_rows. ' 个记录分为 ' .$this->total_pages. ' 页, 当前第 ' . $this->now_page . ' 页 ';
$return .= ',每页 ';
$return .= '<input type="text" value="'.$this->list_rows.'" id="pagesize" size="3"> ';
$return .= $this->first_page()."\n";
$return .= $this->up_page()."\n";
$return .= $this->down_page()."\n";
$return .= $this->last_page()."\n";
$return .= '<select onchange="'.$this->ajax_func_name.'(this.value)" id="gotopage">';
for ($i = $begin;$i<=$begin+10;$i++)
{
if($i>$this->total_pages)
{
break;
}
if($i == $this->now_page)
{
$return .= '<option selected="true" value="'.$i.'">'.$i.'</option>';
}
else
{
$return .= '<option value="' .$i. '">' .$i. '</option>';
}
}
$return .= '</select>';
return $return;
}
}
使用方法
###处理html静态化页面分页的情况###
# method 处理环境 设置为 html
# parameter 为静态页面参数 xxx.com/20-0-0-0-40-?.html 注意问号
# ?问号的位置会自动替换为去向页码
# now_page 当前页面(静态页面获取不到当前页面所以只有你传入)
$params = array(
'total_rows'=>100, #(必须)
'method' =>'html', #(必须)
'parameter' =>'xxx.com/20-0-0-0-40-?.html', #(必须)
'now_page' =>$_get['p'], #(必须)
'list_rows' =>10, #(可选) 默认为15
);
$page = new core_lib_page($params);
echo $page->show(1);
#<a href="xxx.com/20-0-0-0-40-2.html">2</a>
###处理ajax分页的情况###
# method 处理环境 设置为 ajax
# ajax_func_name ajax分页跳转页面的javascript方法
# parameter ajax_func_name后面的附带参数 默认为空
# now_page 不到当前页面所以只有你传入
$params = array(
'total_rows'=>100,
'method' =>'ajax',
'ajax_func_name' =>'gotopage',
'now_page' =>1,
#'parameter' =>"'jiong','username'",
);
$page = new core_lib_page($params);
echo $page->show(1);
#<a href="javascript:void(0)" onclick="gotopage('7')">7</a>
#添加了parameter<a href="javascript:void(0)" onclick="gotopage('6','jiong','username')">6</a>