????$conn?=?new?mysqli($serverName,?$MYSQLUserName,?$MYSQLPwd); ????$sql?=?"use?WA"; ????if($conn->query($sql)){ ????}???else{ ????????if($conn->error?==?"Unknown?database?'wa'"){ ????????????$sqlCreateDatabase?=?"create?database?WA;"; ????????????$sqlCreateDatabase?.=?"alter?database?WA?character?set?utf8;"; ????????????$conn->multi_query($sqlCreateDatabase); ????????????$sqlCreateTable?=?"create?table?userInfo( ?????????????????id?smallint?unsigned?primary?key?auto_increment, ?????????????????userName?varchar(30), ?????????????????pwd?varchar(6) ?????????????);"; ?????????????if($conn->query($sqlCreateTable)){ ????????????????echo("success"); ?????????????}??else{ ????????????????echo($conn->error); ?????????????} ????????} ????}數據庫WA成功創建，字符集也修改了。但數據表沒能創建成功。報錯：Commands out of sync; you can't run this command now百度了下沒找到解決方法，說是得先清空結果集，試了下也沒成功。請大神幫忙。錯誤明顯是從第14行開始的。在14行前面應該是要釋放一下什么東西，請問這個東西要怎么釋放。