PHPページめくり類
14083 ワード
<?php
/**
* filename: ext_page.class.php
* @package:phpbean
* @author :feifengxlq<feifengxlq#gmail.com><[url=http://www.phpobject.net/]http://www.phpobject.net/[/url]>
* @copyright :Copyright 2006 feifengxlq
* @license:version 2.0
* @create:2006-5-31
* @modify:2006-6-1
* @modify:feifengxlq 2006-11-4
* descrīption: ， ， baidu,google 。
* 2.0 ： ， ， PHP4 PHP5,
* to see detail,please visit [url=http://www.phpobject.net/blog/read.php]http://www.phpobject.net/blog/read.php[/url]?
* example:
* ：
require_once('../libs/classes/page.class.php');
$page=new page(array('total'=>1000,'perpage'=>20));
echo 'mode:1<br>'.$page->show();
echo '<hr>mode:2<br>'.$page->show(2);
echo '<hr>mode:3<br>'.$page->show(3);
echo '<hr>mode:4<br>'.$page->show(4);
AJAX：
$ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
echo 'mode:1<br>'.$ajaxpage->show();
：
demo:[url=http://www.phpobject.net/blog]http://www.phpobject.net/blog[/url]
*/
class _page
{
/**
* config ,public
*/
var $page_name="PB_page";//page ， url 。 xxx.php?PB_page=2 PB_page
var $next_page='>';//
var $pre_page='<';//
var $first_page='First';//
var $last_page='Last';//
var $pre_bar='<<';//
var $next_bar='>>';//
var $format_left='[';
var $format_right=']';
var $is_ajax=false;// AJAX
/**
* private
*
*/
var $pagebarnum=10;// 。
var $totalpage=0;//
var $ajax_action_name='';//AJAX
var $nowindex=1;//
var $url="";//url
var $offset=0;
/**
* constructor
*
* @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...
*/
function page($array)
{
if(is_array($array)){
if(!array_key_exists('total',$array))$this->error(__FUNCTION__,'need a param of total');
$total=intval($array['total']);
$perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
$nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
$url=(array_key_exists('url',$array))?$array['url']:'';
}else{
$total=$array;
$perpage=10;
$nowindex='';
$url='';
}
if((!is_int($total))||($total<0))$this->error(__FUNCTION__,$total.' is not a positive integer!');
if((!is_int($perpage))||($perpage<=0))$this->error(__FUNCTION__,$perpage.' is not a positive integer!');
if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);// pagename
$this->_set_nowindex($nowindex);//
$this->_set_url($url);//
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$perpage;
if(!empty($array['ajax']))$this->open_ajax($array['ajax']);// AJAX
}
/**
* ， ， throw exception
*
* @param string $var
* @param string $value
*/
function set($var,$value)
{
if(in_array($var,get_object_vars($this)))
$this->$var=$value;
else {
$this->error(__FUNCTION__,$var." does not belong to PB_Page!");
}
}
/**
* AJAX
*
* @param string $action ajax 。
*/
function open_ajax($action)
{
$this->is_ajax=true;
$this->ajax_action_name=$action;
}
/**
* " "
*
* @param string $style
* @return string
*/
function next_page($style='')
{
if($this->nowindex<$this->totalpage){
return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
}
return '<span class="'.$style.'">'.$this->next_page.'</span>';
}
/**
* “ ”
*
* @param string $style
* @return string
*/
function pre_page($style='')
{
if($this->nowindex>1){
return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
}
return '<span class="'.$style.'">'.$this->pre_page.'</span>';
}
/**
* “ ”
*
* @return string
*/
function first_page($style='')
{
if($this->nowindex==1){
return '<span class="'.$style.'">'.$this->first_page.'</span>';
}
return $this->_get_link($this->_get_url(1),$this->first_page,$style);
}
/**
* “ ”
*
* @return string
*/
function last_page($style='')
{
if($this->nowindex==$this->totalpage){
return '<span class="'.$style.'">'.$this->last_page.'</span>';
}
return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
}
function nowbar($style='',$nowindex_style='')
{
$plus=ceil($this->pagebarnum/2);
if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
$begin=$this->nowindex-$plus+1;
$begin=($begin>=1)?$begin:1;
$return='';
for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
{
if($i<=$this->totalpage){
if($i!=$this->nowindex)
$return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));
else
$return.=$this->_get_text('<span class="'.$nowindex_style.'">'.$i.'</span>');
}else{
break;
}
$return.="
";
}
unset($begin);
return $return;
}
/**
*
*
* @return string
*/
function select()
{
$return='<select name="PB_Page_Select" onchange="PageSelect()">';
for($i=1;$i<=$this->totalpage;$i++)
{
if($i==$this->nowindex){
$return.='<option value="'.$i.'" selected>'.$i.'</option>';
}else{
$return.='<option value="'.$i.'">'.$i.'</option>';
}
}
unset($i);
$return.='</select>';
return $return;
}
/**
* mysql limit
*
* @return string
*/
function offset()
{
return $this->offset;
}
/**
* （ ）
*
* @param int $mode
* @return string
*/
function show($mode=1)
{
switch ($mode)
{
case '1':
$this->next_page=' ';
$this->pre_page=' ';
return $this->pre_page().$this->nowbar().$this->next_page().' '.$this->select().' ';
break;
case '2':
$this->next_page=' ';
$this->pre_page=' ';
$this->first_page=' ';
$this->last_page=' ';
return $this->first_page().$this->pre_page().'[ '.$this->nowindex.' ]'.$this->next_page().$this->last_page().' '.$this->select().' ';
break;
case '3':
$this->next_page=' ';
$this->pre_page=' ';
$this->first_page=' ';
$this->last_page=' ';
return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
break;
case '4':
$this->next_page=' ';
$this->pre_page=' ';
return $this->pre_page().$this->nowbar().$this->next_page();
break;
case '5':
return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
break;
case '6':
return $this->select();
break;
case '7':
return $this->nowbar();
break;
}
}
/*----------------private function ( )-----------------------------------------------------------*/
/**
* url
* @param: String $url
* @return boolean
*/
function _set_url($url="")
{
if(!empty($url)){
//
$this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
}else{
//
if(empty($_SERVER['QUERY_STRING'])){
// QUERY_STRING
$this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
}else{
//
if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
//
$this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);
$last=$this->url[strlen($this->url)-1];
if($last=='?'||$last=='&'){
$this->url.=$this->page_name."=";
}else{
$this->url.='&'.$this->page_name."=";
}
}else{
//
$this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';
}//end if
}//end if
}//end if
}
/**
*
*
*/
function _set_nowindex($nowindex)
{
if(empty($nowindex)){
//
if(isset($_GET[$this->page_name])){
$this->nowindex=intval($_GET[$this->page_name]);
}
if(isset($_POST['PB_Page_Select'])){
$this->nowindex=$_POST['PB_Page_Select'];
}
}else{
//
$this->nowindex=intval($nowindex);
}
}
/**
*
*
* @param int $pageno
* @return string $url
*/
function _get_url($pageno=1)
{
return $this->url.$pageno;
}
/**
* ， _get_text('<a href="">1</a>') [<a href="">1</a>]
*
* @param String $str
* @return string $url
*/
function _get_text($str)
{
return $this->format_left.$str.$this->format_right;
}
/**
*
*/
function _get_link($url,$text,$style=''){
$style=(empty($style))?'':'class="'.$style.'"';
if($this->is_ajax){
// AJAX
return '<a '.$style.' href="javascrīpt:'.$this->ajax_action_name.'(\''.$url.'\')">'.$text.'</a>';
}else{
return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
}
}
/**
*
*/
function error($function,$errormsg)
{
die('Error in file <b>'.__FILE__.'</b> ,Function <b>'.$function.'()</b> :'.$errormsg);
}
}
// ， .
class Page extends _Page {
var $db; //db connected object
var $_Sql_Query = ''; // sql
var $_Total = 0; // .
var $_Rst = array(); // .
/**
* .
*
* @param String $Sql SQL .
* @param int $pagenuber .
* @param int $pagen .
* @param String $url . index.php?xx=b&bb=33
* @param String $pname , index.php?xx=b&bb=33&page=2
$pname . : $pname='db_page', : index.php?xx=b&bb=33&db_page=2
* @return Mysql_Page
*/
function Page($db, $sql_query = '', $max_rows_per_page = 20, $current_page_number = 0, $url = '', $parameters = '', $pname = 'PB_page',$otc = '*') {
$this -> db = $db;
$pos_to = strlen($sql_query);
$pos_from = strpos($sql_query, ' from', 0);
$pos_group_by = strpos($sql_query, ' group by', $pos_from);
if (($pos_group_by < $pos_to) && ($pos_group_by != false)) $pos_to = $pos_group_by;
$pos_having = strpos($sql_query, ' having', $pos_from);
if (($pos_having < $pos_to) && ($pos_having != false)) $pos_to = $pos_having;
$pos_order_by = strpos($sql_query, ' order by', $pos_from);
if (($pos_order_by < $pos_to) && ($pos_order_by != false)) $pos_to = $pos_order_by;
$reviews_count = $this -> db -> getResults("select count($otc) as total " . substr($sql_query, $pos_from, ($pos_to - $pos_from)));
$query_num_rows = $reviews_count[0]['total'];
$this -> _Total = $query_num_rows;
$num_pages = ceil($query_num_rows / $max_rows_per_page);
if ($current_page_number > $num_pages) {
$current_page_number = $num_pages;
}
$offset = ($max_rows_per_page * ($current_page_number - 1));
if ($offset < 0) $offset = 0;
if ($offset > 0) {
$offset = $offset + 1;
}
$this -> _Sql_Query = $sql_query . " limit " . $offset . ", " . $max_rows_per_page;
$this -> setData(); // .
parent :: page(array('total' => $query_num_rows, 'perpage' => $max_rows_per_page, 'page_name' => $pname, 'url' => $url, 'parameters' => $parameters));
}
/**
* , .
*/
function findByAll() {
return $this -> _Rst;
}
/**
* .
*
* @param int $model
*/
function dispaly_links($model) {
$this -> show($model);
}
/**
* .
*
* @return Int
*/
function getCount() {
return $this -> _Total;
}
/**
* ..
*
* @return Int
*/
function getRows() {
return count($this -> _Rst);
}
/**
* .
* .
* .
*/
function setData() {
$this -> _Rst = $this -> db -> getResults($this -> _Sql_Query);
}
}
?>