全局命令选项 命令进程退出代码 命令行自动完成 init - 初始化PHP包 install - 解析依赖关系并安装依赖包 update - 升级依赖包 require - 添加新的依赖并安装依赖包 remove - 移除依赖包 check-platform-reqs - 检查平台依赖 global - 全局执行 search - 搜索软件包 show - 查看软件包信息 outdated - 检查依赖包是否过时 browse - 浏览软件包的网页 suggests depends prohibits validate status self-update config create-project dump-autoload clear-cache licenses run-script exec diagnose archive help COMPOSER COMPOSER_ALLOW_SUPERUSER COMPOSER_ALLOW_XDEBUG COMPOSER_AUTH COMPOSER_BIN_DIR COMPOSER_CACHE_DIR COMPOSER_CAFILE COMPOSER_DISABLE_XDEBUG_WARN COMPOSER_DISCARD_CHANGES COMPOSER_HOME COMPOSER_HTACCESS_PROTECT COMPOSER_MEMORY_LIMIT COMPOSER_MIRROR_PATH_REPOS COMPOSER_NO_INTERACTION COMPOSER_PROCESS_TIMEOUT COMPOSER_ROOT_VERSION COMPOSER_VENDOR_DIR HTTP_PROXY HTTP_PROXY_REQUEST_FULLURI HTTPS_PROXY_REQUEST_FULLURI COMPOSER_SELF_UPDATE_TARGET NO_PROXY