加载资源

use Symfony\Component\Config\FileLocator;
 
$configDirectories = array(__DIR__.'/app/config');
 
$locator = new FileLocator($configDirectories);
$yamlUserFiles = $locator->locate('users.yml', null, false);

use Symfony\Component\Config\Loader\FileLoader;
use Symfony\Component\Yaml\Yaml;
 
class YamlUserLoader extends FileLoader
{
    public function load($resource, $type = null)
    {
        $configValues = Yaml::parse(file_get_contents($resource));
 
        // ... handle the config values / 处理配置值
 
        // maybe import some other resource: / 可能会导入其他资源
 
        // $this->import('extra_users.yml');
    }
 
    public function supports($resource, $type = null)
    {
        return is_string($resource) && 'yml' === pathinfo(
            $resource,
            PATHINFO_EXTENSION
        );
    }
}

use Symfony\Component\Config\Loader\LoaderResolver;
use Symfony\Component\Config\Loader\DelegatingLoader;
 
$loaderResolver = new LoaderResolver(array(new YamlUserLoader($locator)));
$delegatingLoader = new DelegatingLoader($loaderResolver);
 
$delegatingLoader->load(__DIR__.'/users.yml');
/*
The YamlUserLoader will be used to load this resource,
since it supports files with a "yml" extension
YamlUserLoader将被用于加载这个资源，
因为它支持“yml”扩展名的文件
*/