阿里巴巴下载2013免费下载php实现的仿阿里巴巴实现同类产品翻页

代码如下:

/** 实现同类产品翻页 **/
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);
/** 上一页链接 **/
$c = count($list1);
if($c > 1) {
$url = $this->pageName."-".$list1[$c]['id'].".html";
$pages = "上一页

";
}elseif($c == 1) {
$url = $this->pageName."-".$list1[0]['id'].".html";
$pages = "上一页
";
}else {
$pages = "";
}
/** 当前页的左边内容 **/
foreach($list1 as $item) {
$url = $this->pageName."-".$item['id'].".html";
$pages .= "
1. {$start}
";
$start++;
}
$pages .= "
2. {$leftCount}
";
$start++;
/** 当前页面右边的内容 **/
foreach($list1 as $item) {
$url = $this->pageName."-".$item['id'].".html";
$pages .= "
3. {$start}
";
$start++;
}
/** 下一页的链接 **/
$c = count($list2);
if($c > 0) {
$url = $this->pageName."-".$list2[0]['id'].".html";
$pages .= "下一页
";
}else {
$pages .= "";
}
return $pages;
}
};
?>


以上就介绍了阿里巴巴下载2013免费下载 php实现的仿阿里巴巴实现同类产品翻页，包括了阿里巴巴下载2013免费下载方面的内容，希望对PHP教程有兴趣的朋友有所帮助。