Symfony_DI_PhpDumper_Test_EnvParameters example

putenv('Baz='.$rand);
        $container = new ContainerBuilder();
        $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
        $loader->load('services26.yml');
        $container->setParameter('env(json_file)', self::$fixturesPath.'/array.json');
        $container->compile();
        $dumper = new PhpDumper($container);

        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php', 'inline_factories' => false, 'inline_class_loader' => false]));

        require self::$fixturesPath.'/php/services26.php';
        $container = new \Symfony_DI_PhpDumper_Test_EnvParameters();
        $this->assertSame($rand, $container->getParameter('baz'));
        $this->assertSame([123, 'abc'], $container->getParameter('json'));
        $this->assertSame('sqlite:///foo/bar/var/data.db', $container->getParameter('db_dsn'));
        putenv('Baz');
    }

    public function testResolvedBase64EnvParameters()
    {
        $container = new ContainerBuilder();
        $container->setParameter('env(foo)', base64_encode('world'));
        $container->setParameter('hello', '%env(base64:foo)%');