PHP classic paging code class. This is a PHP paging code. It is a classic example code that can automatically determine the URL parameters and then perform paging. At the same time, it can customize the previous page, next page, home page, and last page. It also supports select. Drop-down box jump code.
PHP tutorial classic paging code class
This is a PHP paging code. It is a classic example code that can automatically determine the URL parameters and then perform paging. At the same time, the upper page, next page, home page, and end page are customized. page, and also supports select drop-down box jump code.
*/
class page{
var $page_name="page";
var $next_page='next page';
var $pre_page='previous page';
var $first_page='home page';
var $last_page='last page';
var $ pre_bar='<<';
var $next_bar='>>';
var $format_left='';
var $format_right=' ';
var $pagebarnum=5;
var $totalpage=0;
var $nowindex=1;
var $url="" ;
var $offset=0;
var $rewrite = array();
function page($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']:'';
$action = (array_key_exists('action', $array)) ? $array['action'] : '';
$id0 = (array_key_exists('id0', $array)) ? $array['id0'] : '';
$id1 = (array_key_exists('id1', $array)) ? $array['id1'] : '';
$id2 = (array_key_exists('id2', $array)) ? $array['id2'] : '';
$id3 = (array_key_exists( 'id3', $array)) ? $array['id3'] : '';}else{
$total=$array;
$perpage= 10;
$nowindex='';
$url='';
$action = '';
$id0 = '';
$id1 = '';
$id2 = '';
$id3 = '';}
if((!is_int($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']);
$this->_set_nowindex($nowindex);
$this->_set_url($url);
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$perpage;
$this->action = $action;
$this->rewrite = array('action'=>$action,'id0'=>$id0, 'id1'=> ;$id1, 'id2'=>$id2, 'id3'=>$id3);
}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!");
}
}
function next_page($style=''){
if($this->nowindex<$this->totalpage){
return $this->_get_link($this->_get_url($this->nowindex+1),$this- >next_page,$style);
}
return ''.$this->next_page.'';
}function pre_page($style=''){
if($this->nowindex>1){
return $this->_get_link($this-> _get_url($this->nowindex-1),$this->pre_page,$style);
}
return ''.$ this->pre_page.'';
}function first_page($style=''){
if($this->nowindex==1){
return ''.$this->first_page.'';
}
return $this-> _get_link($this->_get_url(1),$this->first_page,$style);
}function last_page($style=''){
if($this ->nowindex==$this->totalpage||$this->totalpage==0){return ''. $this->last_page.'';
}
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(''.$i.'');
}else{
break;
}
$return.="n";
}
unset($begin);
return $return;
}
/**
* Get the code to display the jump button
*
* @return string
*/
function select()
{
$return='
for($i=1;$i<=$this->totalpage;$i++)
{
if($i==$this->nowindex){
$return.='';
}else{
$return.='';
}
}
unset($i);
$return.='';return $return;
}
/**
* Get the value required for limit in the mysql tutorial statement
*
* @return string
*/
function offset()
{
return $this->offset;
}
/**
* Control paging display style (you can add the corresponding style)
*
* @param int $mode
* @return string
*/
function show($mode=1)
{
switch ($mode)
{
case '1':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';
break;
case '2':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';
break;
case '3':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page("page_box")."".$this->pre_page("page_box")."".$this->nowbar("page_box_a","page_box_b")."".$this->next_page("page_box")."".$this->last_page("page_box")."";
break;
case '4':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page().$this->nowbar().$this->next_page();
break;
case '5':
return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
break;
}
}
function _set_url($url="")
{
if(!empty($url)){
$this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
}else{
if(empty($_server['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'].'&'.$this->page_name.'=';
}
}
}
}
function _set_nowindex($nowindex){
if(empty($nowindex)){
if(isset($_get[$this->page_name])){
$this->nowindex=intval($_get[$this->page_name]);
}
}else{
$this->nowindex=intval($nowindex);
}
}
function _get_url($pageno=1)
{
global $_cfg;
$arr = $this->rewrite;
//print_r($arr);
//print_r($this->url.$pageno);
if($_cfg['urlrewrite'] && !empty($arr['action'])){
return url_rewrite($arr['action'], array('id0'=>$arr['id0'],'id1'=>$arr['id1'],'id2'=>$arr['id2'],'id3'=>$arr['id3'],'page'=>$pageno));
}else{
return $this->url.$pageno;
}}
function _get_text($str)
{
return $this->format_left.$str.$this->format_right;
}
function _get_link($url,$text,$style=''){
$style=(empty($style))?'':'class="'.$style.'"';
return ''.$text.'';
}
function error($function,$errormsg){
die('error in file '.__file__.' ,function '.$function.'() :'.$errormsg);
}
}
?>
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