yii\redis\Connection::parseResponse PHP Метод

    private function parseResponse($command)
    {
        if (($line = fgets($this->_socket)) === false) {
            throw new Exception("Failed to read from socket.\nRedis command was: " . $command);
        }
        $type = $line[0];
        $line = mb_substr($line, 1, -2, '8bit');
        switch ($type) {
            case '+':
                // Status reply
                if ($line === 'OK' || $line === 'PONG') {
                    return true;
                } else {
                    return $line;
                }
            case '-':
                // Error reply
                throw new Exception("Redis error: " . $line . "\nRedis command was: " . $command);
            case ':':
                // Integer reply
                // no cast to int as it is in the range of a signed 64 bit integer
                return $line;
            case '$':
                // Bulk replies
                if ($line == '-1') {
                    return null;
                }
                $length = $line + 2;
                $data = '';
                while ($length > 0) {
                    if (($block = fread($this->_socket, $length)) === false) {
                        throw new Exception("Failed to read from socket.\nRedis command was: " . $command);
                    }
                    $data .= $block;
                    $length -= mb_strlen($block, '8bit');
                }
                return mb_substr($data, 0, -2, '8bit');
            case '*':
                // Multi-bulk replies
                $count = (int) $line;
                $data = [];
                for ($i = 0; $i < $count; $i++) {
                    $data[] = $this->parseResponse($command);
                }
                return $data;
            default:
                throw new Exception('Received illegal data from redis: ' . $line . "\nRedis command was: " . $command);
        }
    }