Symfony\Bundle\DoctrineBundle\DependencyInjection\DoctrineExtension::createOrmProxyDirectory PHP Method

    protected function createOrmProxyDirectory($tmpDir)
    {
        // Create entity proxy directory
        $proxyCacheDir = $tmpDir.'/doctrine/orm/Proxies';
        if (!is_dir($proxyCacheDir)) {
            if (false === @mkdir($proxyCacheDir, 0777, true)) {
                die(sprintf('Unable to create the Doctrine Proxy directory (%s)', dirname($proxyCacheDir)));
            }
        } elseif (!is_writable($proxyCacheDir)) {
            die(sprintf('Unable to write in the Doctrine Proxy directory (%s)', $proxyCacheDir));
        }
    }