PHP分頁類實現

分享一個常用的php分頁類。有三種表現形式，具體如下：

該php分頁類的具體代碼以及使用方法如下：

/**
*PHP分頁類
 *
*show(2) 1 ... 62 63 64 65 66 67 68 ... 150
*分頁樣式
*#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 Pager{
public $first_row;//起始行數
public $list_rows;//列表每頁顯示行數
protected $total_pages;//總頁數
protected $total_rows;//總行數
protected $now_page;//當前頁數
protected $method='defalut';//處理情況 Ajax分頁 Html分頁(靜態化時) 普通get方式
protected $parameter='';
protected $page_name;//分頁參數的名稱
protected $ajax_func_name;
public $plus=3;//分頁位移量
protected $url;
/**
*建構函式
 *
*@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']:'page';
$this->ajax_func_name=!empty($data['ajax_func_name'])?$data['ajax_func_name']:'';
$this->method=!empty($data['method'])?$data['method']:'';
/* 當前頁面 */
if(!empty($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);
}
/**
*得到當前串連
 *
*@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 'ajax_func_name.'('.$page.$parameter.')" href="javascript:void(0)">'.$text.''."";
break;
case 'html' :
$url=str_replace('?',$page,$this->parameter);
return ''.$text.'';
break;

default :
return '_get_url($page).'">'.$text.'';
break;
}
}
/**
*設定當前頁面連結
 */
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 $page 頁面
*@return string
 */
protected function _get_url($page){
if($this->url === NULL){
$this->_set_url();
}
//$lable=strpos('&',$this->url) === FALSE?'':'&';
return $this->url.$this->page_name.'='.$page;
}
/**
*得到第一頁
 *
*@return string
 */
public function first_page($name='第一頁'){
if($this->now_page>5){
return $this->_get_link('1',$name);
}
return '';
}
/**
*最後一頁
 *
*@param
*       $name
*@return string
 */
public function last_page($name='最後一頁'){
if($this->now_page<$this->total_pages-5){
return $this->_get_link($this->total_pages,$name);
}
return '';
}
/**
*上一頁
 *
*@return string
 */
public function up_page($name='上一頁'){
if($this->now_page!=1){
return $this->_get_link($this->now_page-1,$name);
}
return '';
}
/**
*下一頁
 *
*@return string
 */
public function down_page($name='下一頁'){
if($this->now_page<$this->total_pages){
return $this->_get_link($this->now_page+1,$name);
}
return '';
}
/**
*分頁樣式輸出
 *
*@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){
$return.="$i";
}else{
if($this->now_page-$i>=4&&$i!=1){
$return.="...";
$i=$this->now_page-3;
}else{
if($i>=$this->now_page+5&&$i!=$this->total_pages){
$return.="...";
$i=$this->total_pages;
}
$return.=$this->_get_link($i,$i);
}
}
}
$return.=$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){
$return.="$i";
}else{
$return.=$this->_get_link($i,$i);
}
}
$return.=$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;
$return='總計 '.$this->total_rows.' 個記錄分為 '.$this->total_pages.' 頁,當前第 '.$this->now_page.' 頁 ';
$return.=',每頁 ';
$return.=' ';
$return.=$this->first_page();
$return.=$this->up_page();
$return.=$this->down_page();
$return.=$this->last_page();
$return.='';for($i=$begin;$i<=$begin+10;$i++){if($i>$this->total_pages){break;}if($i==$this->now_page){$return.=''.$i.'';}else{$return.=''.$i.'';}}$return.='';
return $return;
}
}

類使用樣本：###處理html靜態化頁面分頁的情況###

# method 處理環境 設定為 html
# parameter 為靜態頁面參數 www.scutephp.com/20-0-0-0-40-?.html 注意問號
# ?問號的位置會自動替換為去向頁碼
# now_page 當前頁面(靜態頁面擷取不到當前頁面所以只有你傳入)

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

#2

###處理ajax分頁的情況###
# method 處理環境 設定為 ajax
# ajax_func_name ajax分頁跳轉頁面的javascript方法
# parameter ajax_func_name後面的附帶參數 預設為空白
# now_page 不到當前頁面所以只有你傳入

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

#7
#添加了parameter6

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