分享一个调用广告位的代码（函数或Widget类）

自己写的一个调用广告位的函数和Widget类
首先是函数：缓存，自定义广告位模板。 function Ad($id=0){
if(intval($id)){
$ad = S("ad_".$id);
if(empty($ad)){
$ad = '';
$adinfo = M('adplace')->find($id);
if(!$adinfo || $adinfo['status']==0){
return '广告位已经关闭';
}else{
import(Think.Core.View);
$view = new View;
$template = APP_PATH."Tpl/Home/Ad/".($adinfo['tpl']?$adinfo['tpl']:'index').".html";
if(!is_file($template)){return '模板路径错误';}
$to = APP_PATH.'Runtime/Cache/'.GROUP_NAME.'/'.md5($template).'.php';
$width = $adinfo['adwidth'];
$height = $adinfo['adheight'];
$typeid = $adinfo['typeid'];
switch($adinfo['typeid']){
case 1:
$adlist = M('ad')->where(array('pid'=>$adinfo['id'],'status'=>1))->order('sort asc,id desc')->select();
foreach($adlist as $t){
$v['title'] = $t['title'];
$v['thumb'] = $t['ad_file'];
$v['linkurl'] = $t['ad_url'] ? $t['ad_url'] : $t['url'];
$tags[] = $v;
}
if($tags){
$view->display($template);
if(!is_file($to)){return '配置错误';}
ob_start();
include $to;
$ad = ob_get_contents();
ob_clean();
}
break;
case 2:
$adlist = M('ad')->where(array('pid'=>$adinfo['id'],'status'=>1))->order('sort asc,id desc')->select();
foreach($adlist as $t){
$v['title'] = $t['title'];
$v['thumb'] = $t['ad_file'];
$v['linkurl'] = $t['ad_url'] ? $t['ad_url'] : $t['url'];
$tags[] = $v;
}
if($tags){
$view->display($template);
if(!is_file($to)){return '配置错误';}
ob_start();
include $to;
$ad = ob_get_contents();
ob_clean();
}
break;
case 3:
$adlist = M('ad')->where(array('pid'=>$adinfo['id'],'status'=>1))->order('sort asc,id desc')->find();
if($adlist){
$view->display($template);
if(!is_file($to)){return '配置错误';}
ob_start();
include $to;
$ad = ob_get_contents();
ob_clean();
}
break;
}
//生成缓存
S("ad_".$id,$ad);
}
}
return $ad;
}else{
return '没有广告位';
}
}
?>下面这个是用Widget类，好像用不了缓存，其实是不会写，脑子不会转弯了。 class AdWidget extends Action{
public function show($id=0){
if($id){
$adinfo = M('adplace')->find($id);
if(!$adinfo || $adinfo['status']==0){
echo '';
}else{
$this -> assign('id' , $id);
$this -> assign('width' , $adinfo['adwidth']);
$this -> assign('height' , $adinfo['adheight']);
$typeid = $adinfo['typeid'];
$this -> assign('typeid' , $typeid);
switch($adinfo['typeid']){
case 1:
$adlist = M('ad')->where(array('pid'=>$adinfo['id'],'status'=>1))->order('sort asc,id desc')->select();
foreach($adlist as $t){
$v['title'] = $t['title'];
$v['thumb'] = $t['ad_file'];
$v['linkurl'] = $t['ad_url'] ? $t['ad_url'] : $t['url'];
$tags[] = $v;
}
if($tags){
$this->assign('tags',$tags);
$this->display("Ad:index");
}
break;
case 2:
$adlist = M('ad')->where(array('pid'=>$adinfo['id'],'status'=>1))->order('sort asc,id desc')->select();
foreach($adlist as $t){
$v['title'] = $t['title'];
$v['thumb'] = $t['ad_file'];
$v['linkurl'] = $t['ad_url'] ? $t['ad_url'] : $t['url'];
$tags[] = $v;
}
if($tags){
$this->assign('tags',$tags);
$this->display("Ad:index");
}
break;
case 3:
$adlist = M('ad')->where(array('pid'=>$adinfo['id'],'status'=>1))->order('sort asc,id desc')->find();
if($adlist){
$this->assign('adlist',$adlist);
$this->display('Ad:index');
}
break;
}
}
}else{
echo '';
}
}
}
?>调用方法：{:Ad(3)}

---

{:R('Ad/show',array('id'=>3),'Widget')}我个人喜欢那个Ad($id)函数，调用方便，还能缓存。不知道效率上哪个好一点。对Widget类，不是太明白，刚刚看了资料临时写的。

AD：真正免费，域名+虚机+企业邮箱=0元