PHP classic paging code class_PHP tutorial

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.='

'.$i.'';

   }else{

    $return.='

'.$i.'';

   }

  }

  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);

 }

}
?>

http://www.bkjia.com/PHPjc/444853.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/444853.htmlTechArticlephp 经典的分页代码类 这是一款php分页代码是一款经典的可自动判断url参数再进行分页的实例代码，同时自定了上页，下页，首页，尾页哦，...