select `ID` from `z_web_mod_keyword` where `class` in ('article') and `word` in ('清代') and `state`='1' order by `CID` descArray ( [0] => Array ( [ID] => 72445 [DID] => 10 [CID] => 2674 [class] => article [word] => 清代 [state] => 1 ) [1] => Array ( [ID] => 8699 [DID] => 15 [CID] => 794 [class] => article [word] => 清代 [state] => 1 ) [2] => Array ( [ID] => 12867 [DID] => 11 [CID] => 188 [class] => article [word] => 清代 [state] => 1 ) [3] => Array ( [ID] => 14334 [DID] => 10 [CID] => 68 [class] => article [word] => 清代 [state] => 1 ) ) 1