composer
composer dump-autoload
在部署代码到生产环境的时候，优化自动加载
composer dump-autoload --optimize
将composer版本升级到最新
composer self-update
执行诊断命令：
composer diagnose
清除缓存：
composer clear
若项目之前已通过其他源安装，则需要更新 composer.lock 文件，执行命令
composer update --lock
更新所有依赖
composer update
更新指定的包
composer update monolog/monolog
更新指定的多个包
composer update monolog/monolog symfony/dependency-injection
还可以通过通配符匹配包
composer update monolog/monolog symfony/*
移除指定的包
composer remove monolog/monolog
搜索包
composer search monolog
列出所有已经安装的包
composer show
可以通过通配符进行筛选
composer show monolog/*
显示具体某个包的信息
composer show monolog/monolog
查看全局配置
composer config -l -g
设置超时时间
composer config --global process-timeout 2000
