5分钟安装 关于win10安装composer PHP 用来管理依赖（dependency）关系的工具

 1.在你的phpstudy或者wamp中开启extension=php_openssl.dll扩展 (php配置文件)并配置好php的环境变量 

 2.在与你安装phpstudy和wamp不一样的盘中创建文件夹 ：phpStudy\composer目录

3.cmd输入

   1）php -r "copy('https://install.phpcomposer.com/installer', 'composer-setup.php');"

命令:
 2）php composer-setup.php

命令:
echo @php "%~dp0composer.phar" %*>composer.bat

命令:
composer -V

composer config -g secure-http false

composer config -g repo.packagist composer https://packagist.phpcomposer.com

到了这一步要建个composer.json文件

{
"require": {
"monolog/monolog": "1.2.*"
}
}

命令:
php composer.phar install

命令:
composer install

命令:
composer selfupdate
命令:
composer update

将composer目录添加到系统环境
path 中