カプセル化された PHP ページング クラス、シンプルで使いやすい

クラス ページネーションに依存しないページング クラス
呼び出し方法:
$pagenation = new Pagination( 4, 10, 200 ); // 4(最初のパラメータ) = currentPage, 10(2 番目のパラメータ) = pageSize, 200(3 番目のパラメータ) = 合計数
$pagenation->set_link( 'http://www.360hqb.com' );
$pagenation->show();

/**
 * class Pagination
 *
 * 独立したページネーション クラス
 * メソッドの呼び出し:
 * $pagenation = new Pagination( 4, 10, 200 ); // 4 (最初のパラメーター) = currentPage, 10 (2 番目のパラメーター) = pageSize, 200 (3 番目のパラメーター) = 合計数
 * $pagenation->set_link( 'http://www.360hqb.com' );
 * $pagenation->show();
*/
class Java_Pagination
{
 protected $_total = 0;
 protected $_total_page = 0;
 protected $_page = 1;
 protected $_page_size = 10;
 protected $_link = '';
 protected $_grep = 3;

 protected $_admin = false;
 protected $_css_next = '次のページ';
 protected $_css_prev = '前のページ';
 protected $_css_curr = 'curr-page';
 protected $_css_page = 'page-nav inline-block';

 public function __construct ( $page, $page_size, $total, $admin = false )
 {
 $this->set_current_page( $page );
 $this->set_page_size( $page_size );
 $this->set_total( $total );

 if ( $admin )
 {
 $this->_admin = $admin;
 }
 //$this->_link = $_SERVER['REQUEST_URI'];
 $this->set_link( $_SERVER['REQUEST_URI'] );
 }

 public function set_link ( $link, $is_shop = TRUE )
 {
 $len = strlen( $link );
 $substr = substr( $link, $len - 1 );
 if ( '&' == $substr )
 {
 $link = substr( $link, 0, $len - 1 );
 }
 $pos = strpos( $link, '?' );
 if ( $pos )
 {
 $link = substr( $link, 0, $pos );
 }
 if ( !empty( $_GET ) )
 {
 $link .= '?';
 foreach ( $_GET as $k=>$v )
 {
 if ( 'page' == strto lower( $k ) )
 {
 continue;
 }
 $link .= $k.'='.$v.'&';
 }
 $len = strlen( $link );
 $substr = substr( $link, $len - 1 );
 if ( '&' == $substr )
 {
 $link = substr( $link, 0, $len - 1);
 }
 }
 elseif ( isset( $_SERVER['QUERY_STRING'] ) AND !empty( $_SERVER['QUERY_STRING'] ) AND $is_shop )
 {
 $link .= '?'.$_SERVER['QUERY_STRING'];
 $len = strlen( $link );
 $substr = substr ( $link, $len - 1 );
 if ( '&' == $substr )
 {
 $link = substr( $link, 0, $len - 1);
 }
 }
 $this-> _link = $link;
 }

 public function set_page_size ( $page_size )
 {
 if ( empty( $page_size ) )
 {
 $this->gt;_page_size = 10;
 }
 else
 {
 $this-> ;_page_size = (int) $page_size;
 }
 }

 public function set_total ( $total )
 {
 $page_size = empty( $this->_page_size )?10:$this->_page_size;
 $this ->total = $total;
 if ( 0 == ( $total % $page_size ) )
 {
 $this->total_page = intval( $total / $page_size );
 }
 else
 {
 $this ->_total_page = intval( $total / $page_size ) + 1;
 }
 if ( $this->_page > $this->_total_page )
 {
 $this->_page = $this->_total_page;
 }
 }

 public function set_current_page ( $page )
 {
 if ( empty( $page ) )
 {
 $this->_page = 1;
 }
 else
 {
 $this->_page = (int) $page;
 }
 }

 public function get_next_page_btn ()
 {
 if ( $this-> ;_page < $this->_total_page )
 {
 $link = '';
 if ( strpos( $this->_link, '?' ) )
 {
 $link = $this->_link. '&page='.( $this->_page + 1 );
 }
 else
 {
 $link = $this->_link.'?page='.( $this->_page + 1 );
 }
 if ( $this->gt;_admin )
 {
 return '下一页';
 }
 else
 {
 return '
下一页
 }
 }
 if ( $this->_admin )
 return '下一页 ?';
 else
 return '';
 }

 public function get_prev_page_btn ()
 {
 if ( $this->_page > 1 )
 {
 $link = '';
 if ( strpos( $this->_link, '?' ) )
 {
 $link = $this->_link.'&page='.( $this- >_page - 1 );
 }
 else
 {
 $link = $this->_link.'?page='.( $this->_page - 1 );
 }
 if ( $this-> ;_admin )
 {
 return '上一页';
 }
 else
 {
 return '
上一页
 }
 }
 if ( $this ->_admin )
 return '? 上一页';
 else
 return '';
 }

 public function get_current_page ()
 {
 if ( $this->_admin )
 return '_page.'';
 else
 return '
'.$this->_page.'
 }

 public function get_page_link ( $page )
 {
 $link = '';
 if ( strpos( $this->_link, '?' ) )
 {
 $link = $this->_link.'&page='.$page;
 }
 else
 {
 $ link = $this->_link.'?page='.$page;
 }
 if ( $this->_admin )
 {
 return ' '.$page.'';
 }
 else
 {
 return '
'.$page.'