demo.php

<?php

namespace app\commands;

use Yii;
use app\models\Cur;

class HelloController extends \yii\console\Controller
{
    //2019-12-23
    public function actionLoad($date)
    {
        $res = Cur::find()->where(['date' => $date])->all();

        if (!empty($res)) {
            echo "Эта дата уже добавлена";
            exit;
        }

        $cbr_date = date('d/m/Y', strtotime($date));
        $sxe = new \SimpleXMLElement("http://www.cbr.ru/scripts/XML_daily.asp?date_req={$cbr_date}", NULL, TRUE);

        foreach ($sxe->Valute as $value) {
            $cur = new Cur;
            $cur->code = $value->CharCode;
            $cur->value = (double) str_replace(',', '.', $value->Value);
            $cur->name = $value->Name;
            $cur->unit = $value->Nominal;
            $cur->date = $date;
            $cur->save(false);

            echo "{$cur->name} Сохранено".PHP_EOL;
        }
    }

    public function actionGet($date)
    {
        $res = Cur::find()->where(['date' => $date])->all();

        echo "Date: {$date}".PHP_EOL.PHP_EOL;

        foreach ($res as $cur) {
            echo "{$cur->name}: {$cur->value} рублей за {$cur->unit} {$cur->code}".PHP_EOL;
        }
    }
}