使用本地目录将symfony 2.8升级到3.4

Question

我正在考虑如何使用本地目录将Symfony 2.8升级到3.4。我的开发环境不能访问互联网。

我一直在关注https://getcomposer.org/doc/05-repositories.md#path

我下载Symfony 3.4并将其存放在与Synfony 2.8相同的目录中

Frameworks 
    Symfony-2.8
    Symfony-3.4

然后我对composer.json文件(symfony 2.8)进行了如下配置：

"repositories": [
    {
        "type": "path",
        "url" : "/frameworks/symfony3-4"
    }
],
 "require": {
        "/frameworks/symfony3-4": "*"
},

当我尝试更新时：

Composer update

我有这个错误：

Problem 1
  - The requested package ../symfony3-4 could not be found in any version, there
 may be a typo in the package name.

Potential causes:
 A typo in the package name
 The package is not available in a stable-enough version according to your minimum-stability setting
 see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

你有什么建议做这件事吗？

Answer 1

在require语句中使用"symfony/symfony": "^3.0"