PHP分页类实现

<p><?php</p><p>/**</p>*PHP分页类<br /> *<br />*show(2) 1 ... 62 63 64 65 66 67 68 ... 150<br />*分页样式<br />*#page{font:12px/16px arial}<br />*#page span{float:left;margin:0px 3px;}<br />*#page a{float:left;margin:0 3px;border:1px solid #ddd;padding:3px<br />*7px;text-decoration:none;color:#666}<br />*#page a.now_page,#page a:hover{color:#fff;background:#05c}<br /> */<br />class Pager{<br />public $first_row;//起始行数<br />public $list_rows;//列表每页显示行数<br />protected $total_pages;//总页数<br />protected $total_rows;//总行数<br />protected $now_page;//当前页数<br />protected $method='defalut';//处理情况 Ajax分页 Html分页(静态化时) 普通get方式<br />protected $parameter='';<br />protected $page_name;//分页参数的名称<br />protected $ajax_func_name;<br />public $plus=3;//分页偏移量<br />protected $url;<br />/**<br />*构造函数<br /> *<br />*@param unknown_type $data<br /> */<br />public function __construct($data=array()){<br />$this->total_rows=$data['total_rows'];<br />$this->parameter=!empty($data['parameter'])?$data['parameter']:'';<br />$this->list_rows=!empty($data['list_rows'])&&$data['list_rows']<=100?$data['list_rows']:15;<br />$this->total_pages=ceil($this->total_rows / $this->list_rows);<br />$this->page_name=!empty($data['page_name'])?$data['page_name']:'page';<br />$this->ajax_func_name=!empty($data['ajax_func_name'])?$data['ajax_func_name']:'';<br />$this->method=!empty($data['method'])?$data['method']:'';<br />/* 当前页面 */<br />if(!empty($data['now_page'])){<br />$this->now_page=intval($data['now_page']);<br />}else{<br />$this->now_page=!empty($_GET[$this->page_name])?intval($_GET[$this->page_name]):1;<br />}<br />$this->now_page=$this->now_page<=0?1:$this->now_page;<br />if(!empty($this->total_pages)&&$this->now_page>$this->total_pages){<br />$this->now_page=$this->total_pages;<br />}<br />$this->first_row=$this->list_rows*($this->now_page-1);<br />}<br />/**<br />*得到当前连接<br /> *<br />*@param<br />*       	$page<br />*@param<br />*       	$text<br />*@return string<br /> */<br />protected function _get_link($page,$text){<br />switch ($this->method){<br />case 'ajax' :<br />$parameter='';<br />if($this->parameter){<br />$parameter=','.$this->parameter;<br />}<br />return '<a onclick="'.$this->ajax_func_name.'('.$page.$parameter.')" href="javascript:void(0)">'.$text.'</a>'."";<br />break;<br />case 'html' :<br />$url=str_replace('?',$page,$this->parameter);<br />return '<a href="'.$url.'">'.$text.'</a>';<br />break;<br /><br />default :<br />return '<a href="'.$this->_get_url($page).'">'.$text.'</a>';<br />break;<br />}<br />}<br />/**<br />*设置当前页面链接<br /> */<br />protected function _set_url(){<br />$url=$_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter;<br />$parse=parse_url($url);<br />if(isset($parse['query'])){<br />parse_str($parse['query'],$params);<br />unset($params[$this->page_name]);<br />$url=$parse['path'].'?'.http_build_query($params);<br />}<br />if(!empty($params)){<br />$url.='&';<br />}<br />$this->url=$url;<br />}<br />/**<br />*得到$page的url<br /> *<br />*@param $page 页面<br />*@return string<br /> */<br />protected function _get_url($page){<br />if($this->url === NULL){<br />$this->_set_url();<br />}<br />//	$lable=strpos('&',$this->url) === FALSE?'':'&';<br />return $this->url.$this->page_name.'='.$page;<br />}<br />/**<br />*得到第一页<br /> *<br />*@return string<br /> */<br />public function first_page($name='第一页'){<br />if($this->now_page>5){<br />return $this->_get_link('1',$name);<br />}<br />return '';<br />}<br />/**<br />*最后一页<br /> *<br />*@param<br />*       	$name<br />*@return string<br /> */<br />public function last_page($name='最后一页'){<br />if($this->now_page<$this->total_pages-5){<br />return $this->_get_link($this->total_pages,$name);<br />}<br />return '';<br />}<br />/**<br />*上一页<br /> *<br />*@return string<br /> */<br />public function up_page($name='上一页'){<br />if($this->now_page!=1){<br />return $this->_get_link($this->now_page-1,$name);<br />}<br />return '';<br />}<br />/**<br />*下一页<br /> *<br />*@return string<br /> */<br />public function down_page($name='下一页'){<br />if($this->now_page<$this->total_pages){<br />return $this->_get_link($this->now_page+1,$name);<br />}<br />return '';<br />}<br />/**<br />*分页样式输出<br /> *<br />*@param<br />*       	$param<br />*@return string<br /> */<br />public function show($param=1){<br />if($this->total_rows<1){<br />return '';<br />}<br />$className='show_'.$param;<br />$classNames=get_class_methods($this);<br />if(in_array($className,$classNames)){<br />return $this->$className();<br />}<br />return '';<br />}<br />protected function show_2(){<br />if($this->total_pages!=1){<br />$return='';<br />$return.=$this->up_page('<');<br />for($i=1;$i<=$this->total_pages;$i++){<br />if($i==$this->now_page){<br />$return.="<a class='now_page'>$i</a>";<br />}else{<br />if($this->now_page-$i>=4&&$i!=1){<br />$return.="<span class='pageMore'>...</span>";<br />$i=$this->now_page-3;<br />}else{<br />if($i>=$this->now_page+5&&$i!=$this->total_pages){<br />$return.="<span>...</span>";<br />$i=$this->total_pages;<br />}<br />$return.=$this->_get_link($i,$i);<br />}<br />}<br />}<br />$return.=$this->down_page('>');<br />return $return;<br />}<br />}<br />protected function show_1(){<br />$plus=$this->plus;<br />if($plus+$this->now_page>$this->total_pages){<br />$begin=$this->total_pages-$plus*2;<br />}else{<br />$begin=$this->now_page-$plus;<br />}<br /><br />$begin=($begin>=1)?$begin:1;<br />$return='';<br />$return.=$this->first_page();<br />$return.=$this->up_page();<br />for($i=$begin;$i<=$begin+$plus*2;$i++){<br />if($i>$this->total_pages){<br />break;<br />}<br />if($i==$this->now_page){<br />$return.="<a class='now_page'>$i</a>";<br />}else{<br />$return.=$this->_get_link($i,$i);<br />}<br />}<br />$return.=$this->down_page();<br />$return.=$this->last_page();<br />return $return;<br />}<br />protected function show_3(){<br />$plus=$this->plus;<br />if($plus+$this->now_page>$this->total_pages){<br />$begin=$this->total_pages-$plus*2;<br />}else{<br />$begin=$this->now_page-$plus;<br />}<br />$begin=($begin>=1)?$begin:1;<br />$return='总计 '.$this->total_rows.' 个记录分为 '.$this->total_pages.' 页,当前第 '.$this->now_page.' 页 ';<br />$return.=',每页 ';<br />$return.='<input type="text" value="'.$this->list_rows.'" id="pageSize" size="3"> ';<br />$return.=$this->first_page();<br />$return.=$this->up_page();<br />$return.=$this->down_page();<br />$return.=$this->last_page();<br />$return.='<select onchange="'.$this->ajax_func_name.'(this.value)" id="gotoPage">';<br />for($i=$begin;$i<=$begin+10;$i++){<br />if($i>$this->total_pages){<br />break;<br />}<br />if($i==$this->now_page){<br />$return.='<option selected="true" value="'.$i.'">'.$i.'</option>';<br />}else{<br />$return.='<option value="'.$i.'">'.$i.'</option>';<br />}<br />}<br />$return.='</select>';<br />return $return;<br />}<br /><p>}

$params=array(<br />'total_rows'=>100,#(必须)<br />'method'    =>'html',#(必须)<br />'parameter' =>'www.scutephp.com/20-0-0-0-40-?.html', #(必须)<br />'now_page'  =>$_GET['p'], #(必须)<br />'list_rows' =>10,#(可选) 默认为15<br />);<br />$page=new Pager($params);<br />   echo $page->show(1);

$params=array(<br />'total_rows'=>100,<br />'method'    =>'ajax',<br />'ajax_func_name' =>'goToPage',<br />'now_page'  =>1,<br />#'parameter' =>"'jiong','username'",<br />);<br />$page=new Pager($params);<br />echo $page->show(1);