Symfony2 what is the function of getting the absolute path, relative path, URL of the web directory

I want to get the various paths to the web directory in action

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I want to get the various paths to the web directory in action

For your needs, SYMFONY2 provides kernel services through DIC, as well as a request package.

In the controller (in other places you can inject kernel yourself, this service is a class in the Httpkernel library: Good kids like to read the source code):

$appRoot = $this->get('kernel')->getRootDir(); // 这里得到的是app目录的绝对路径// ... 然后你可以再定位到web目录了

The relative path to the Web directory? What's the relative path? No matter what your actual needs are, SF2 provides you with a ready-made tool that you can compare to to get a relative path:

use Symfony\Component\Filesystem\Filesystem;$filesystem = new Filesystem();$filesystem->makePathRelative($endPath, $startPath); // $endPath相对$startPath的相对路径

As for the URL, you can get it by request:

// 在controll里：$this->getRequest()->getHost(); // 主机名$this->getRequest()->getHttpHost(); // 带协议的主机名$this->getRequest()->getRequestUri(); // 请求的路径

There are a lot of ways to see it yourself.

