yii2 的ActiveRecord

$cond[] = "and";//条件数组需要加and，单一个字符串不需要加。
$cond[] = "payTime >= ‘{$startDate}‘";
$cond[] = "payTime <‘{$endDate}‘";
$field = [‘merId‘,‘mchntName‘,‘orderId‘];
$payLog = WebPayRecord::find()->select($field)->where($cond)->asArray()->all();

$payLog =  WebPayRecord::find()->where("merTrxId = ‘{$merTrxId}‘")->one();

$this->card_record = new BankCardRecord();
$this->card_record[‘userName‘]= "dawei";
$this->card_record->save();

$bankCard = BankCardRecord::find()->where($cond)->one();
if(!empty($bankCard)){
　　$bankCard[‘updateTime‘] = date(‘Y-m-d H:i:s‘);
　　$bankCard->update();
}