ecshop 首页分类树

1.函数方法

/**  * 获得指定分类同级的所有分类以及该分类下的子分类  *  * @access  public  * @param   integer     $cat_id     分类编号  * @return  array  */
function get_categories_tree($cat_id =0) {    
if ($cat_id > 0)     {        
$sql = 'SELECT parent_id FROM ' . $GLOBALS['ecs']->table('category') . " WHERE cat_id = '$cat_id'";        
$parent_id = $GLOBALS['db']->getOne($sql);     }     else     {         $parent_id = 0;     }

    /*      判断当前分类中全是是否是底级分类，      如果是取出底级分类上级分类，      如果不是取当前分类及其下的子分类     */    
$sql = 'SELECT count(*) FROM ' . $GLOBALS['ecs']->table('category') . " WHERE parent_id = '$parent_id' AND is_show = 1 ";    
if ($GLOBALS['db']->getOne($sql) || $parent_id == 0)     {         /* 获取当前分类及其子分类 */         $sql = 'SELECT cat_id,cat_name ,parent_id,is_show ' .                 'FROM ' . $GLOBALS['ecs']->table('category') .                 "WHERE parent_id = '$parent_id' AND is_show = 1 ORDER BY sort_order ASC, cat_id ASC";
        $res = $GLOBALS['db']->getAll($sql);
        foreach ($res AS $row)         {            
if ($row['is_show'])             {                
$cat_arr[$row['cat_id']]['id']   = $row['cat_id'];                
$cat_arr[$row['cat_id']]['name'] = $row['cat_name'];                
$cat_arr[$row['cat_id']]['url']  = build_uri('category', array('cid' => $row['cat_id']), $row['cat_name']);
                if (isset($row['cat_id']) != NULL)                 {                    
$cat_arr[$row['cat_id']]['cat_id'] = get_child_tree($row['cat_id']);                 }             }         }     }    
if(isset($cat_arr))     {         return $cat_arr;     } }
function get_child_tree($tree_id = 0) {    
$three_arr = array();    
$sql = 'SELECT count(*) FROM ' . $GLOBALS['ecs']->table('category') . " WHERE parent_id = '$tree_id' AND is_show = 1 ";    
if ($GLOBALS['db']->getOne($sql) || $tree_id == 0)     {         $child_sql = 'SELECT cat_id, cat_name, parent_id, is_show ' .                 'FROM ' . $GLOBALS['ecs']->table('category') .                 "WHERE parent_id = '$tree_id' AND is_show = 1 ORDER BY sort_order ASC, cat_id ASC";        
$res = $GLOBALS['db']->getAll($child_sql);        
foreach ($res AS $row)         {            
if ($row['is_show'])
               $three_arr[$row['cat_id']]['id']   = $row['cat_id'];                
$three_arr[$row['cat_id']]['name'] = $row['cat_name'];                
$three_arr[$row['cat_id']]['url']  = build_uri('category', array('cid' => $row['cat_id']), $row['cat_name']);
               if (isset($row['cat_id']) != NULL)                    {                        
$three_arr[$row['cat_id']]['cat_id'] = get_child_tree($row['cat_id']);
            }        
}    
}    
return $three_arr;
}
 2.模板首页调用方法
$smarty->assign('categories',      get_categories_tree()); // 分类树

3.调用分类模板category_tree.lbi

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div class="box">
 <div class="box_1">
  <div id="category_tree">
    <!--{foreach from=$categories item=cat}-->
     <dl>
     <dt><a href="{$cat.url}">{$cat.name|escape:html}</a></dt>
     <!--{foreach from=$cat.cat_id item=child}-->
     <dd><a href="{$child.url}">{$child.name|escape:html}</a></dd>
       <!--{foreach from=$child.cat_id item=childer}-->
       <dd>&nbsp;&nbsp;<a href="{$childer.url}">{$childer.name|escape:html}</a></dd>
       <!--{/foreach}-->
     <!--{/foreach}-->      
       </dl>
    <!--{/foreach}-->
  </div>
 </div>
</div>
<div class="blank5"></div>