php Composer 无法下载文件
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Composer cannot download files
提问by mlwacosmos
I am trying to use composer on command line :
我正在尝试在命令行上使用作曲家：
php composer.phar update
php composer.phar install
php composer.phar self-update
php composer.phar selfupdate
Whatever I do I always receive the same error message:
无论我做什么，我总是收到相同的错误消息：
File could not be downloaded. Failed to open stream
无法下载文件。无法打开流
I am behind a proxy. If I use a browser and type the same URLs as the ones that didn't work with command line, there is no problem.
我在代理后面。如果我使用浏览器并键入与无法使用命令行的 URL 相同的 URL，则没有问题。
What should I do?
我该怎么办？
回答by Tim Groeneveld
If you are using composer from behind an HTTP proxy, you can use the standard http_proxyor HTTP_PROXYenv vars. Simply set it to the URL of your proxy. Many operating systems already set this variable for you.
如果您在 HTTP 代理后面使用 composer，您可以使用标准http_proxy或环境HTTP_PROXY变量。只需将其设置为代理的 URL。许多操作系统已经为您设置了这个变量。
eg:
例如：
HTTP_PROXY="http://my-corp-proxy.mcdonalds" php composer.phar install
bonus points if you throw it into your bashrc if your on Linux/OS X or your environment settings for Windows.
如果您在 Linux/OS X 上或您的 Windows 环境设置中将其放入 bashrc 中，则可获得加分。
To make it easier, you can just export the variable, then you don't have to type it all the time.
为方便起见，您可以只导出变量，然后您不必一直输入它。
export HTTP_PROXY="http://my-corp-proxy.mcdonalds"
php composer.phar install
回答by Oriam
The right an easy way to run composer on windows under a proxy is opening the console (cmd), go to your project location and run this command:
在代理下的 Windows 上运行 composer 的正确简单方法是打开控制台（cmd），转到您的项目位置并运行以下命令：
C:\wamp\htdocs\myproject\> SET HTTP_PROXY=http://username:[email protected]:8080 && php composer.phar install
PD: You must changes parameters like: username, password, proxy.yourdomain.com and 8080 to yours
PD：您必须将用户名、密码、proxy.yourdomain.com 和 8080 等参数更改为您的
I hope this help to you
我希望这对你有帮助
回答by mp31415
And DO NOT set https_proxy(just http_proxy)!
并且不要设置https_proxy（只是http_proxy）！
