Dotenv.md

Dotenv Component

symfony3.4 开始环境变量开始采用Dotenv管理，存储于.env

The Dotenv Component parses .env files to make environment variables stored in them accessible via getenv(), $_ENV or $_SERVER.

• 设置环境变量文件加载

    # web/app.php
    use Symfony\Component\HttpFoundation\Request;
    use Symfony\Component\Dotenv\Dotenv; // +++
  
    require __DIR__.'/../vendor/autoload.php';
    if (PHP_VERSION_ID < 70000) {
        include_once __DIR__.'/../var/bootstrap.php.cache';
    }
  
    $kernel = new AppKernel('prod', false);
    if (PHP_VERSION_ID < 70000) {
        $kernel->loadClassCache();
    }
    //$kernel = new AppCache($kernel);
    $dotenv = new Dotenv(); // +++
    $dotenv->load(__DIR__.'/.env'); // +++
    // 可加载多个配置文件 // ++
    // $dotenv->load(__DIR__.'/.env', __DIR__.'/.env.dev'); //++
    // When using the HttpCache, you need to call the method in your front controller instead of relying on the configuration parameter
    //Request::enableHttpMethodParameterOverride();
    $request = Request::createFromGlobals();
    $response = $kernel->handle($request);
    $response->send();
    $kernel->terminate($request, $response);
  

• 设置.env文件

    # web/.env,可新建.env.dist 为默认配置文件
    # this is theme config
    THEME=Default
  

• 获取环境变量

    $theme = getenv('THEME') ? getenv('THEME') : 'Default';