命令号安装: 1\. windows 配置PHP环境变量 ,配置成功之后 2.在cmd中输入一下: ``` php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" php -r "if (hash\_file('SHA384', 'composer-setup.php') === '669656bab3166a7aff8a7506b8cb2d1c292f042046c5a994c43155c0be6190fa0355160742ab2e1c88d40d5be660b410') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP\_EOL;" php composer-setup.php php -r "unlink('composer-setup.php');" ``` 下载安装包: 下载地址 : [https://getcomposer.org/download/](https://getcomposer.org/download/)  运行 Composer-Setup.exe 程序, 一直下一步, 下一步 需要选择当前运行的php.exe 文件