Composer cannot download files
composer-php, php
Solution
If you are using composer from behind an HTTP proxy, you can use the standard `http_proxy` or `HTTP_PROXY` env vars. Simply set it to the URL of your proxy. Many operating systems already set this variable for you.
eg:
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.
To make it easier, you can just export the variable, then you don't have to type it all the time.
export HTTP_PROXY="http://my-corp-proxy.mcdonalds"
php composer.phar install
Problem
I am trying to use composer on command line : ``` 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: File could not be downloaded. Failed to open stream 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. What should I do?