php 经典的分页代码类

2024-05-04 23:06:56

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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,同时还支持select下拉框跳转代码.

php 经典的分页代码类代码如下:

class page{

var $page_name="page";

var $next_page='下一页';

var $pre_page='上一页';

var $first_page='首页';

var $last_page='尾页';

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(!emptyempty($array['page_name']))$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 '<a class="'.$style.'">'.$this->next_page.'</a>';

}

function pre_page($style=''){

  if($this->nowindex>1){

    return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);

  }

  return '<a class="'.$style.'">'.$this->pre_page.'</a>';

}

function first_page($style=''){

  if($this->nowindex==1){

     return '<a class="'.$style.'">'.$this->first_page.'</a>';

  }

  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 '<a class="'.$style.'">'.$this->last_page.'</a>';

  }

  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('<a class="'.$nowindex_style.'">'.$i.'</a>');

   }else{

    break;

   }

   $return.=" ";

  }

  unset($begin);

  return $return;

}

/**

  * 获取显示跳转按钮的代码

  *

  * @return string

  */

function select()

{

   $return='<select name="pb_page_select">';

  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;

}



/**

  * 获取mysql教程语句中limit需要的值

  *

  * @return string

  */

function offset()

{

  return $this->offset;

}



/**

  * 控制分页显示风格（你可以增加相应的风格）

  *

  * @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")."<a class="clear"></a>";

    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(!emptyempty($url)){

   $this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";

  }else{

   if(emptyempty($_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(emptyempty($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($_cfg['urlrewrite'] && !emptyempty($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=''){

  $style=(emptyempty($style))?'':'class="'.$style.'"';

  return '<a '.$style.' href="'.$url.'">'.$text.'</a>';

}

function error($function,$errormsg)

//开源代码Vevb.com

{

     die('error in file <b>'.__file__.'</b> ,function <b>'.$function.'()</b> :'.$errormsg);

}

}