PhpMigration\Logger::log PHP Метод

    public function log($level, $message, array $context = [])
    {
        // Check level defined
        if (!in_array($level, static::$levels)) {
            throw new InvalidArgumentException();
        }
        // Verify Exception
        if (isset($context['exception'])) {
            $exception = $context['exception'];
            if (!$exception instanceof \Exception) {
                $exception = new \Exception((string) $exception);
                $context['exception'] = $exception;
            }
        }
        $message = $this->interpolate($message, $context);
        // Open stream
        if (!isset($this->strerr)) {
            $this->stderr = fopen('php://stderr', 'w');
        }
        fprintf($this->stderr, "[%s] %s\n", strtoupper($level), $message);
    }