我是新手。我用PHP编写了大部分查询。我创建了一个连接对象，然后访问了sqlserver。functionnavigation($sel_subject,$sel_page,$filter=false){$subject_set=get_all_subjects();$page_set=get_pages_for_subject($subject["id"],$sec_wp,$filter);}functionget_all_subjects(){global$connection;$query="SELECT*FROMsubjectsORDERBYposition";returnod