#### Composer php 软件包依赖管理器 ``` composer list #显示所有命令 composer show #显示所有包信息 composer install #在 composer.json 配置中添加依赖库之后运行此命令安装 composer create-project laravel/laravel Laravel --prefer-dist 5.1.* #创建项目 composer search packagename #搜索包 composer update #更新所有包 composer update monolog/monolog #更新指定包 composer remove monolog/monolog #移除指定的包 composer require monolog/monolog #添加指定包 composer require monolog/monolog:1.19 #添加指定包和版本 composer require monolog/monolog=1.19 #添加指定包和版本 composer require monolog/monolog 1.19 #添加指定包和版本 composer dump-autoload #如果更新了composer.json需要更新autoload ```