if($logNums >= 20) {

$logList = $tableLog->limit(20)->order("id", "asc")->select() ;

foreach($logList as $k => $v){

#$condition[] = $v['id'];

}

$tableLog->where('id', 'in', $logList)->limit(20)->order("id", "asc")->delete();

}

請教大佬關於thinkphp操作資料庫的問題，如何保留最新的20條，大於20條就清除多餘的呢？

先感謝解答..