PHP分页类

<?php  /**   * 分页类   * @author  xiaojiong & 290747680@qq.com   * @date 2011-08-17   *    * show(2)  1 ... 62 63 64 65 66 67 68 ... 150   * 分页样式    * #page{font:12px/16px arial}   * #page span{float:left;margin:0px 3px;}   * #page a{float:left;margin:0 3px;border:1px solid #ddd;padding:3px 7px; text-decoration:none;color:#666}   * #page a.now_page,#page a:hover{color:#fff;background:#05c}  */    class Core_Lib_Page  {      public     $first_row;           //起始行数        public     $list_rows;        //列表每页显示行数            protected  $total_pages;      //总页数        protected  $total_rows;          //总行数            protected  $now_page;         //当前页数            protected  $method  = 'defalut'; //处理情况 Ajax分页 Html分页(静态化时) 普通get方式             protected  $parameter = '';            protected  $page_name;        //分页参数的名称            protected  $ajax_func_name;            public        $plus = 3;         //分页偏移量            protected  $url;                  /**       * 构造函数       * @param unknown_type $data       */      public function __construct($data = array())      {          $this->total_rows = $data['total_rows'];            $this->parameter         = !empty($data['parameter']) ? $data['parameter'] : '';          $this->list_rows         = !empty($data['list_rows']) && $data['list_rows'] <= 100 ? $data['list_rows'] : 15;          $this->total_pages        = ceil($this->total_rows / $this->list_rows);          $this->page_name          = !empty($data['page_name']) ? $data['page_name'] : 'p';          $this->ajax_func_name    = !empty($data['ajax_func_name']) ? $data['ajax_func_name'] : '';                    $this->method           = !empty($data['method']) ? $data['method'] : '';                              /* 当前页面 */          if(!empty($data['now_page']))          {              $this->now_page = intval($data['now_page']);          }else{              $this->now_page   = !empty($_GET[$this->page_name]) ? intval($_GET[$this->page_name]):1;          }          $this->now_page   = $this->now_page <= 0 ? 1 : $this->now_page;                          if(!empty($this->total_pages) && $this->now_page > $this->total_pages)          {              $this->now_page = $this->total_pages;          }          $this->first_row = $this->list_rows * ($this->now_page - 1);      }                /**       * 得到当前连接       * @param $page       * @param $text       * @return string       */      protected function _get_link($page,$text)      {          switch ($this->method) {              case 'ajax':                  $parameter = '';                  if($this->parameter)                  {                      $parameter = ','.$this->parameter;                  }                  return '<a onclick="' . $this->ajax_func_name . '(\'' . $page . '\''.$parameter.')" href="javascript:void(0)">' . $text . '</a>' . "\n";              break;                            case 'html':                  $url = str_replace('?', $page,$this->parameter);                  return '<a href="' .$url . '">' . $text . '</a>' . "\n";              break;                            default:                  return '<a href="' . $this->_get_url($page) . '">' . $text . '</a>' . "\n";              break;          }      }                  /**       * 设置当前页面链接       */      protected function _set_url()      {          $url  =  $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter;          $parse = parse_url($url);          if(isset($parse['query'])) {              parse_str($parse['query'],$params);              unset($params[$this->page_name]);              $url   =  $parse['path'].'?'.http_build_query($params);          }          if(!empty($params))          {              $url .= '&';          }          $this->url = $url;      }            /**       * 得到$page的url       * @param $page 页面       * @return string       */      protected function _get_url($page)      {          if($this->url === NULL)          {              $this->_set_url();              }        //    $lable = strpos('&', $this->url) === FALSE ? '' : '&';          return $this->url . $this->page_name . '=' . $page;      }                  /**       * 得到第一页       * @return string       */      public function first_page($name = '第一页')      {           if($this->now_page > 5)           {               return $this->_get_link('1', $name);           }               return '';      }            /**       * 最后一页       * @param $name       * @return string       */      public function last_page($name = '最后一页')      {           if($this->now_page < $this->total_pages - 5)           {               return $this->_get_link($this->total_pages, $name);           }               return '';      }              /**       * 上一页       * @return string       */      public function up_page($name = '上一页')      {          if($this->now_page != 1)          {              return $this->_get_link($this->now_page - 1, $name);          }          return '';      }            /**       * 下一页       * @return string       */      public function down_page($name = '下一页')      {          if($this->now_page < $this->total_pages)          {              return $this->_get_link($this->now_page + 1, $name);          }          return '';      }        /**       * 分页样式输出       * @param $param       * @return string       */      public function show($param = 1)      {          if($this->total_rows < 1)          {              return '';          }                    $className = 'show_' . $param;                    $classNames = get_class_methods($this);            if(in_array($className, $classNames))          {              return $this->$className();          }            return '';      }            protected function show_2()      {          if($this->total_pages != 1)          {              $return = '';              $return .= $this->up_page('<');              for($i = 1;$i<=$this->total_pages;$i++)              {                  if($i == $this->now_page)                  {                      $return .= "<a class='now_page'>$i</a>\n";                  }                  else                  {                      if($this->now_page-$i>=4 && $i != 1)                      {                          $return .="<span class='pageMore'>...</span>\n";                          $i = $this->now_page-3;                      }                      else                      {                          if($i >= $this->now_page+5 && $i != $this->total_pages)                          {                              $return .="<span>...</span>\n";                               $i = $this->total_pages;                          }                          $return .= $this->_get_link($i, $i) . "\n";                      }                  }              }              $return .= $this->down_page('>');              return $return;          }      }            protected function show_1()      {          $plus = $this->plus;          if( $plus + $this->now_page > $this->total_pages)          {              $begin = $this->total_pages - $plus * 2;          }else{              $begin = $this->now_page - $plus;          }                    $begin = ($begin >= 1) ? $begin : 1;          $return = '';          $return .= $this->first_page();          $return .= $this->up_page();          for ($i = $begin; $i <= $begin + $plus * 2;$i++)          {              if($i>$this->total_pages)              {                  break;              }              if($i == $this->now_page)              {                  $return .= "<a class='now_page'>$i</a>\n";              }              else              {                  $return .= $this->_get_link($i, $i) . "\n";              }          }          $return .= $this->down_page();          $return .= $this->last_page();          return $return;      }            protected function show_3()      {          $plus = $this->plus;          if( $plus + $this->now_page > $this->total_pages)          {              $begin = $this->total_pages - $plus * 2;          }else{              $begin = $this->now_page - $plus;          }                  $begin = ($begin >= 1) ? $begin : 1;          $return = '总计 ' .$this->total_rows. ' 个记录分为 ' .$this->total_pages. ' 页, 当前第 ' . $this->now_page . ' 页 ';          $return .= ',每页 ';          $return .= '<input type="text" value="'.$this->list_rows.'" id="pageSize" size="3"> ';          $return .= $this->first_page()."\n";          $return .= $this->up_page()."\n";           $return .= $this->down_page()."\n";          $return .= $this->last_page()."\n";          $return .= '<select onchange="'.$this->ajax_func_name.'(this.value)" id="gotoPage">';                   for ($i = $begin;$i<=$begin+10;$i++)          {              if($i>$this->total_pages)              {                  break;              }                          if($i == $this->now_page)              {                  $return .= '<option selected="true" value="'.$i.'">'.$i.'</option>';              }              else              {                  $return .= '<option value="' .$i. '">' .$i. '</option>';              }                      }           $return .= '</select>';          return $return;      }  }      //使用方法  ###处理html静态化页面分页的情况###  # method 处理环境 设置为 html   # parameter 为静态页面参数  xxx.com/20-0-0-0-40-?.html 注意问号  # ?问号的位置会自动替换为去向页码   # now_page 当前页面(静态页面获取不到当前页面所以只有你传入)  $params = array(              'total_rows'=>100, #(必须)              'method'    =>'html', #(必须)              'parameter' =>'xxx.com/20-0-0-0-40-?.html',  #(必须)              'now_page'  =>$_GET['p'],  #(必须)              'list_rows' =>10, #(可选) 默认为15  );  $page = new Core_Lib_Page($params);     echo  $page->show(1);     #<a href="xxx.com/20-0-0-0-40-2.html">2</a>            ###处理ajax分页的情况###  # method 处理环境 设置为 ajax  # ajax_func_name ajax分页跳转页面的javascript方法  # parameter    ajax_func_name后面的附带参数 默认为空  # now_page 不到当前页面所以只有你传入  $params = array(              'total_rows'=>100,              'method'    =>'ajax',              'ajax_func_name' =>'goToPage',              'now_page'  =>1,              #'parameter' =>"'jiong','username'",  );  $page = new Core_Lib_Page($params);     echo  $page->show(1);          #<a href="javascript:void(0)" onclick="goToPage('7')">7</a>  #添加了parameter<a href="javascript:void(0)" onclick="goToPage('6','jiong','username')">6</a>