安装composer 官方网站：https://getcomposer.org/ download Manual Download 手动下载最新版 下载一个 composer.phar 文件 重命名 composer.phar ``` cp composer.phar composer 或者 mv composer.phar composer ``` 给composer可执行权限 ``` chmod +x composer ``` 执行 ./composer ，如果报错： 设置 环境变量PATH ``` > vim /etc/profile PATH=$PATH:/usr/local/php/bin > source /etc/profile cp ./composer /usr/bin/ ``` 设置composer 中国镜像（阿里云镜像） ``` https://developer.aliyun.com/composer > 配置 composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/ > 取消配置 composer config -g --unset repos.packagist ``` 解决composer报错问题 ``` composer install \--ignore-platform-reqs ```