无法调用PHP函数并无法显示结果

Question

中有三个文件 1）。 classes/header_featured.php

<?php 
    class header_featured{ 
     function getfeatured() { 
      global $db; 
      $ads = array(); 
      $featured_ads = mysql_query("SELECT * FROM class_ads where active=1 and featured=1 limit 50"); 
      while ($temp = mysql_fetch_assoc($featured_ads)) { 
       $record = array(); 
       $record['ad_id']  = $temp['id']; 
       $record['ad_title'] = $temp['title']; 

       //check for image if featured ad have image (Need to fetch only single image) 
       $featured_ads_images = mysql_query("select * from class_ads_pictures where ad_id={$record['ad_id']} order by order_no"); 
       $img = mysql_fetch_assoc($featured_ads_images); 
       $record['img_id']   = $img['id']; 
       $record['ad_img']   = $img['picture']; 
       $record['img_folder']  = $img['folder']; 

       $ads[] = $record; 
      } 
     } 
    } 
?> 

2）。 h_featured.php

<?php 

require_once "include/include.php"; 
require_once "classes/header_featured.php"; 
global $db; 
$smarty = new Smarty; 
$smarty = common($smarty); 

$obj = new header_featured(); 
$featured_ads = $obj->getfeatured(); 
$smarty->assign('featured_ads ', $featured_ads); 

$db->close(); 
if($db->error!='') { $db_error = $db->getError(); $smarty->assign('db_error',$db_error); } 

$smarty->display('h_featured.html'); 
close(); 
?> 

3）。模板/ h_featured.html

{foreach item=item from=$no_featured} 
    {$item.ad_id} 
    {$item.ad_title} 
    {$item.img_id} 
    {$item.ad_img} 
    {$item.img_folder} 
{/foreach} 

我想基本上是什么，我想在我的网站标题即可显示功能的广告，这样为了这个，我创建了一个文件“类/ header_featured.php”，其中我是从数据库fetchings行然后我创建了根“h_featured.php”在我打电话功能的广告功能，并指定变量Smarty的文件“模板/ h_featured.html”，但它不适合我的工作看起来像无显示或没有电话的另一个文件功能或没有数据的分配...

请帮助..

Answer 1

你的方法getfeatured不换货政...任何事情。所以$featured_ads将是空的。

Answer 2

在你的文件中的类/ header_featured.php应该是：

<?php 
    class header_featured{ 
     function getfeatured() { 
      global $db; 
      $ads = array(); 
      $featured_ads = mysql_query("SELECT * FROM class_ads where active=1 and featured=1 limit 50"); 
      while ($temp = mysql_fetch_assoc($featured_ads)) { 
       $record = array(); 
       $record['ad_id']  = $temp['id']; 
       $record['ad_title'] = $temp['title']; 

       //check for image if featured ad have image (Need to fetch only single image) 
       $featured_ads_images = mysql_query("select * from class_ads_pictures where ad_id={$record['ad_id']} order by order_no"); 
       $img = mysql_fetch_assoc($featured_ads_images); 
       $record['img_id']   = $img['id']; 
       $record['ad_img']   = $img['picture']; 
       $record['img_folder']  = $img['folder']; 

       $ads[] = $record; 
      } 
      return $ads; 
     } 
    } 
?>