select `ID` from `z_web_mod_keyword` where `class` in ('article') and `word` in ('当堂') and `state`='1' order by `CID` descArray ( [0] => Array ( [ID] => 798195 [DID] => 7 [CID] => 66020 [class] => article [word] => 当堂 [state] => 1 ) [1] => Array ( [ID] => 96334 [DID] => 7 [CID] => 3409 [class] => article [word] => 当堂 [state] => 1 ) ) 1