composer更新指定包的相关命令！

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 composer require monolog/monolog 1.19