阿里巴巴下載2013免費下載 php實現的仿阿里巴巴實現同類產品翻頁

如果左邊的記錄條數小於$space(頁碼區段)的值，頁碼$start從1開始向右增值。若左則的記錄條數多於$left(左右各顯示頁數)的值，$start將從左邊記錄數減去$left值開始記數。

複製程式碼 程式碼如下:

/**實現同類產品翻頁 **/
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 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);
/**上一頁連結 **/
$c = count($list1);
if($c > 1) {
$url = $this->pageName."-".$list1[$c]['id'].".html";
$pages = "上一頁

";
}elseif($c == 1) {
$url = $this->pageName."-".$list1[0][' id'].".html";
$pages = "上一頁
";
}else {
$pages = "";
}
/**當前頁的左邊內容 **/
foreach($list1 as $item) {
$url = $this->pageName."-".$item[ 'id'].".html";
$pages .= "
1. {$start}
";
$ start++;
}
$pages .= "
2. {$leftCount}
";
$start++;
/**目前頁面右邊的內容 ** /
foreach($list1 as $item) {
$url = $this->pageName."-".$item['id'].".html";
$pages .= "
3. {$start}
";
$start++;
}
/**下一頁的連結 **/
$c = count($list2);
if($c > 0) {
$url = $this->pageName."-".$list2[0]['id']." .html";
$pages .= "下一頁
";
}else {
$pages .= "" ;
}
return $pages;
}
};
?>


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