PHP Database Backup with SSH Tunneling

backup.php

#!/usr/bin/env php
<?php
require_once(getenv('PHP_LIBS_AUTOLOADER'));
(new \NunoMaduro\Collision\Provider)->register();
class Config extends BackupManager\Config\Config
{
    public static function fromArray(array $array)
    {
        return new static($array);
    }
}
$filesystems = new BackupManager\Filesystems\FilesystemProvider(Config::fromArray([
    'local' => [
        'type' => 'Local',
        'root' => '/home/akujin',
    ]
]));
$filesystems->add(new BackupManager\Filesystems\LocalFilesystem);
$databases = new BackupManager\Databases\DatabaseProvider(Config::fromArray([
    'development' => [
        'type' => 'mysql',
        'host' => 'localhost',
        'port' => '3307',
        'user' => 'root',
        'pass' => '',
        'database' => 'technexus',
        'singleTransaction' => true,
        'ignoreTables' => [],
        'ssl'=>false,
    ]
]));
$databases->add(new BackupManager\Databases\MysqlDatabase);
$compressors = new BackupManager\Compressors\CompressorProvider;
$compressors->add(new BackupManager\Compressors\GzipCompressor);
$compressors->add(new BackupManager\Compressors\NullCompressor);
$loop = React\EventLoop\Factory::create();
$process = new React\ChildProcess\Process("ssh -fN -L 3307:127.0.0.1:3306 akuj.in");
$process->start($loop);
try {
    if (!file_exists($path = 'Dropbox/DigiNet/Backups/technexus')) {
        mkdir($path, 0755, true);
    }
    (new BackupManager\Manager($filesystems, $databases, $compressors)) ->makeBackup() ->run('development', [
        new \BackupManager\Filesystems\Destination('local', $file = sprintf('%s/backup-%s.sql', $path, date('U'))),
    ], 'gzip');
    (new League\CLImate\CLImate())->info(sprintf('Saved %s.gz', $file));
} catch (\Exception $e) {
    dump($e);
}
$process->terminate(SIGKILL);