php実現のアリババ模倣同類製品のページめくりを実現

左側のレコードバー数が$space(ページセグメント)の値より小さい場合、ページ$startは1から右に付加価値があります.左のレコード数が$left(左右各表示ページ数)の値より多い場合、$startは左のレコード数から$left値を減算して記数を開始します.

 
  
/**          **/ 
  
 
  
class pager 
  
{ 
  
protected $space; 
  
protected $left; 
  
protected $DB; 
  
protected $pageName; 
  
 
  
public function setSpace($num) { 
  
$this->space = $num; 
  
$this->left = ceil(($num-1)/2); 
  
} 
  
 
  
public function setDB(&$db) { 
  
$this->DB = $db; 
  
} 
  
 
  
public function setPageName($pageName) { 
  
$this->pageName = $pageName; 
  
} 
  
 
  
public function getPages($catid, $exptime) { 
  
$fields = array("`id`,`title`"); 
  
$left = array(">" => array("exptime"=>$exptime), "memberid" => gs(_MEM_PREFIX_ . "memberid"), "catid"=>$catid); 
  
$right = array(" array("exptime"=>$exptime), "memberid" => gs(_MEM_PREFIX_ . "memberid"), "catid"=>$catid); 
  
 
  
$leftCount = $this->DB->getCount($left); 
  
 
  
if($leftCount <= $this->left) { 
  
$star = 1; 
  
$leftLimit = "LIMIT" . $leftCount; 
  
$rightLimit = "LIMIT " . ($this->space-$leftCount); 
  
} 
  
else { 
  
$start = $leftCount - $this->left; 
  
$leftLimit = "LIMIT " . $this->left; 
  
$rightLimit = $leftLimit; 
  
} 
  
 
  
$list1 = $this->DB->findAll($left, array("exptime"=>"ASC"), $leftLimit, $fields); 
  
$list2 = $this->DB->findAll($right, array("exptime"=>"DESC"), $rightLimit, $fields); 
  
 
  
/**       **/ 
  
$c = count($list1); 
  
if($c > 1) { 
  
$url = $this->pageName."-".$list1[$c]['id'].".html"; 
  
$pages = " のページ
"; 
  
}elseif($c == 1) { 
  
$url = $this->pageName."-".$list1[0]['id'].".html"; 
  
$pages = " のページ
"; 
  
}else { 
  
$pages = ""; 
  
} 
  
 
  
 
  
/**          **/ 
  
foreach($list1 as $item) { 
  
$url = $this->pageName."-".$item['id'].".html"; 
  
$pages .= "
{$start}
"; 
  
$start++; 
  
} 
  
 
  
$pages .= "
{$leftCount}
"; 
  
$start++; 
  
 
  
/**           **/ 
  
foreach($list1 as $item) { 
  
$url = $this->pageName."-".$item['id'].".html"; 
  
$pages .= "
{$start}
"; 
  
$start++; 
  
} 
  
 
  
/**        **/ 
  
$c = count($list2); 
  
if($c > 0) { 
  
$url = $this->pageName."-".$list2[0]['id'].".html"; 
  
$pages .= " のページ
"; 
  
}else { 
  
$pages .= ""; 
  
} 
  
 
  
return $pages; 
  
} 
  
}; 
  
?>