composer安装问题
Getting the following when attempting a new install of composer:
The “https://getcomposer.org/versions” file could not be downloaded: failed to open stream: Operation timed out
解决办法：
在自定义的composer目录下：
1、新建composer.bat文件，并写入：
@echo OFF
:: in case DelayedExpansion is on and a path contains !
setlocal DISABLEDELAYEDEXPANSION
php "%~dp0composer.phar" %*
2、下载composer.phar文件，官网就有,放置同一目录，如下。
下载地址
3、安装完成，进行测试（完美）：