>[info] 初始化 命令： ``` composer init ``` 说明： ``` This command will guide you through creating your composer.json config. # 1. 输入项目命名空间 # 注意<vendor>/<name> 必须要符合 [a-z0-9_.-]+/[a-z0-9_.-]+ Package name (<vendor>/<name>) [root/test_composer]:yourname/projectname # 2. 项目描述 Description []:这是一个测试composer init 项目 # 3. 输入作者信息，直接回车可能出现如下提示，有的系统可以直接回车，具体为什么？这里不详细介绍 Invalid author string. Must be in the format: John Smith <john@example.com> # 3.1. 注意必须要符合 John Smith <john@example.com> Author [, n to skip]: John Smith <john@example.com> # 4. 输入最低稳定版本，stable, RC, beta, alpha, dev Minimum Stability []:dev # 5. 输入项目类型 Package Type (e.g. library, project, metapackage, composer-plugin) []:library # 6. 输入授权类型 License []: Define your dependencies. # 7. 输入依赖信息 Would you like to define your dependencies (require) interactively [yes]? # 7.1. 如果需要依赖，则输入要安装的依赖 Search for a package:php # 7.2. 输入版本号 Enter the version constraint to require (or leave blank to use the latest version): >=5.4.0 # 如需多个依赖，则重复以上两个步骤(7.1/7.2) Search for a package: # 8. 是否需要require-dev， Would you like to define your dev dependencies (require-dev) interactively [yes]? { "name": "dduan/test_compser", "description": "这是一个测试composer init 项目", "type": "library", "require": { "php": ">=5.4.0" }, "authors": [ { "name": "John Smith", "email": "john@example.com" } ], "minimum-stability": "dev" } # 9. 是否生成composer.json Do you confirm generation [yes]? # 现在安装依赖项吗 Would you like to install dependencies now [yes]? ``` >[info] 安装 ``` composer install ``` >[info] 更新拉取 composer会根据composer.json去拉取符合条件的最新版本的依赖。然后他会把所拉取到的依赖放入vendor目录下，并且把所有拉取的依赖的精确版本号写入composer.lock文件中。 命令： ``` composer update ``` >[info] 自动加载 ``` composer dump-autoload ```