event

requestCrawler

<?php

namespace common\service;

use yii\base\Component;

class RequestCrawlerService extends Component
{
    const EVENT_INFO_AFTER_SAVE = 'infoAfterSave';
    /** @var object $serializer */
    public $serializer;
    /** @var  string $pathToSave */
    public $pathToSave;

    /**
     * RequestCrawlerService constructor.
     * @param SerializerInterface $serializer
     * @param array $config
     */
    public function __construct(SerializerInterface $serializer, $config = [])
    {
        $this->serializer = $serializer;

//      можно так   $this->on(self::EVENT_INFO_AFTER_SAVE, [Test::className(), 'info']);

        parent::__construct($config);
    }

    /**
     * @param $encoded
     */
    public function encodedAndSaveFile($encoded)
    {
        file_put_contents($this->pathToSave . '/' . time() . '.txt', $encoded, FILE_APPEND | LOCK_EX);

        $this->trigger(self::EVENT_INFO_AFTER_SAVE);
    }
}