php - symfony 符号链接(symbolic link)和 src 路径解析

Question

如果您的服务器上有如下设置:

/path/sites/site1
  app/
  bin/
  web/
  src/
  vendor/ -> /path/vendor/Symfony_2.0.3/vendor (symbolic links)
/path/sites/site2
  app/
  bin/
  web/
  src/
  vendor/ -> /path/vendor/Symfony_2.0.3/vendor (symbolic links)
/path/vendor/Symfony_2.0.3/vendor

symfony 如何知道在哪里可以找到 src 文件夹等？

作为 php 中的 __DIR__ 等，会将/path/sites/site2/vendor 解析为实际的真实路径...

Answer 1

通过反射(reflection)!

Symfony 1.x

sfProjectConfiguration.class.php

static public function guessRootDir()
{
    $r = new ReflectionClass('ProjectConfiguration');

    return realpath(dirname($r->getFileName()).'/..');
}

Symfony 2

Symfony\Component\HttpKernel\Kernel

public function getRootDir()
{
    if (null === $this->rootDir) {
        $r = new \ReflectionObject($this);
        $this->rootDir = str_replace('\\', '/', dirname($r->getFileName()));
    }

    return $this->rootDir;
}