自定义函数之获取无限分类ID下的子类ID集
/*—————————————————— */
//– 获取无限分类ID下面的子类ID集
//– $sort_id = $sort_id.getChildrenIds($sort_id);
//– $sql = ” ….. where sort_id in ($sort_id)”;
/*—————————————————— */
function getChildrenIds ($sort_id)
{
global $db;
$ids = ”;
$sql = “SELECT * FROM “.$db->table(‘article_sort’).” WHERE `parent_id` = ‘{$sort_id}’”;
$res = $db->query ($sql);
if ($res)
{
while ($row = $db->fetch_assoc ($res))
{
$ids .= ‘,’.$row['sort_id'];
$ids .= getChildrenIds ($row['sort_id']);
}
}
return $ids;
}