A simple and easy-to-use PHP paging class_PHP tutorial

Copy code The code is as follows:

class Page {
    // 分页栏每页显示的页数
    public $rollPage = 6;
    // 页数跳转时要带的参数
    public $parameter  ;
    // 默认列表每页显示行数
    public $listRows = 20;
    // 起始行数
    public $firstRow ;
    // 分页总页面数
    protected $totalPages  ;
    // 总行数
    protected $totalRows  ;
    // 当前页数
    protected $nowPage    ;
    // 分页的栏的总页数
    protected $coolPages   ;
    // 分页显示定制
    protected $config  = array(
     'redirect'=>false,
     'header'=>'条记录',
     'prev'=>'上一页',
     'next'=>'下一页',
     'first'=>'1',
     'last'=>'最后一页',
     'theme'=>'

%upPage% %first%  %prePage%  %linkPage%  %nextPage% %downPage%

共  %totalPage% 页');
    // 默认分页变量名
    protected $varPage;

    /**
     +----------------------------------------------------------
     * 架构函数
     +----------------------------------------------------------
     * @access public
     +----------------------------------------------------------
     * @param array $totalRows  总的记录数
     * @param array $listRows  每页显示记录数
     * @param array $parameter  分页跳转的参数
     +----------------------------------------------------------
     */
    public function __construct($totalRows,$listRows='',$parameter='') {
        $this->totalRows = $totalRows;
        $this->parameter = $parameter;
        $this->varPage = C('VAR_PAGE') ? C('VAR_PAGE') : 'p' ;
        if(!empty($listRows)) {
            $this->listRows = intval($listRows);
        }
        $this->totalPages = ceil($this->totalRows/$this->listRows);     //总页数
        $this->coolPages  = ceil($this->totalPages/$this->rollPage);
        //$_GET验证
        $this->nowPage = intval($_GET[$this->varPage]);
        $this->nowPage = $this->nowPage > 0 ? $this->nowPage : 1;

        if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) {
            $this->nowPage = $this->totalPages;
        }
        $this->firstRow = $this->listRows*($this->nowPage-1);
    }

    public function setConfig($name,$value) {
        if(isset($this->config[$name])) {
            $this->config[$name]    =   $value;
        }
    }

/**
+------------------------------------------------- ------------
* Display output in pages
+--------------------------- ----------------------------------
* @access public
+-------- --------------------------------------------------
*/
public function show() {

if(0 == $this->totalRows) return '';

// Processing parameters
$p = $this->varPage;
$url = $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"? ").$this->parameter;
        $parse = parse_url($url);
                                          ],$params);
unset($params[$p]);
$url = $parse['path'].'?'.http_build_query($params);
}

                                                                                                                                                                 Start = 1;
$ END = $ This-& GT; TotalPages;
}
Else {
//
if ($ this- & gt; nowPage & lt; = $ this- & gt; rollPage - 1) {
$start = 1;
$end = $this->rollPage;

$islast = true;
}  
el se if ($this- >nowPage > $this->totalPages - $this->rollPage + 1) {
            $start = $this->totalPages - ($this->rollPage - 1);                    end = $this->totalPages;

$isfirst = true;
}
else{
$size = floor($this-& gt;rollPage / 2);

$start = $this->nowPage - $size;
$end = $this->nowPage + $size;

$isfirst = true;
$islast = true;
}
}

//Page up and down string
$upRow = $this->nowPage - 1; $downRow = $this->nowPage + 1;

                                                                                                                isfirst){
$theFirst = "".$this->config['first ']."";
}
if ($islast){
$theEnd = "".$this->config['last']."";
}

if ($ upRow > 0){
             $upPage = "".$this-> config['prev']."";
}

        if ($downRow <= $this->totalPages){
         $downPage = "".$this->config['next']."";
        }

       if($start==3){
         $linkPage .= "2";
        }
        if($start>=4){
         $linkPage .= "2 ...";
        }
        //1 2 3 4 5
        for($i=$start;$i<=$end;$i++){
         if($i!=$this->nowPage){
          $linkPage .= "  ".$i." ";
         }else{
          $linkPage .= " ".$i."";
         }
         if($i==$end){
          if($i<$this->totalRows){
           $linkPage .= " ...";
          }
         }
        }

        $pageStr = str_replace(
            array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%first%','%prePage%','%linkPage%','%nextPage%','%downPage%','%end%'),
            array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$theFirst,$prePage,$linkPage,$nextPage,$downPage,$theEnd),$this->config['theme']);

        //显示模式  普通false 带跳转ture
        if (!empty($this->config['redirect'])){
         $html = $pageStr;

        }else{
         //传递参数
         if($this->totalPages > 1){
          $redirect = " 到第

页 ";
          if ($params){
           foreach($params as $k => $v){
            $string .= "";
           }
           $redirect = $redirect . $string . '

';
          }else{
           $redirect = $redirect . '

';
          }
         }
         //生成Html字符串
         $html = $pageStr . $redirect;      
        } 
        return $html;
    }

}