在category.php 最后添加以下函数

/*获取顶级id*/

function get_parent($value,$id='')

{

if($value!=0)

{

$sql = 'SELECT parent_id FROM ' . $GLOBALS['ecs']->table('category') . " WHERE cat_id = '$value'";

$res = $GLOBALS['db']->getOne($sql);

return get_parent($res,$value);

}

else

{

return $id;

}

}

/*提取二级分类*/

function get_categories($cat_id = 0)

{

if ($cat_id > 0)

{

$parent_id = $cat_id;

}

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 ' . $GLOBALS['ecs']->table('category') . " WHERE parent_id = '$cat_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 a.cat_id, a.cat_name, a.sort_order AS parent_order, a.cat_id, a.is_show,' .

'b.cat_id AS child_id, b.cat_name AS child_name, b.sort_order AS child_order ' .

'FROM ' . $GLOBALS['ecs']->table('category') . ' AS a ' .

'LEFT JOIN ' . $GLOBALS['ecs']->table('category') . ' AS b ON b.parent_id = a.cat_id AND b.is_show = 1 ' .

"WHERE a.parent_id = '$parent_id' ORDER BY parent_order ASC, a.cat_id ASC, child_order ASC";

}

else

{

/* 获取当前分类及其父分类 */

$sql = 'SELECT a.cat_id, a.cat_name, b.cat_id AS child_id, b.cat_name AS child_name, b.sort_order, b.is_show ' .

'FROM ' . $GLOBALS['ecs']->table('category') . ' AS a ' .

'LEFT JOIN ' . $GLOBALS['ecs']->table('category') . ' AS b ON b.parent_id = a.cat_id AND b.is_show = 1 ' .

"WHERE b.parent_id = '$parent_id' ORDER BY sort_order ASC";

}

$res = $GLOBALS['db']->getAll($sql);

$cat_arr = array();

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 ($row['child_id'] != NULL)

{

$cat_arr[$row['cat_id']]['children'][$row['child_id']]['id']   = $row['child_id'];

$cat_arr[$row['cat_id']]['children'][$row['child_id']]['name'] = $row['child_name'];

$cat_arr[$row['cat_id']]['children'][$row['child_id']]['url']  = build_uri('category', array('cid' => $row['child_id']), $row['child_name']);

}

}

}

return $cat_arr;

}