composer基础及应用

composer是PHP的依赖管理工具可以声明项目所依赖的代码库

安装:

下载: getcomposer.org/download

linux(ubuntu):

curl -sS https://getcomposer.org/install | php

//mv composer.phar /usr/local/bin/composer (全局安装，如果不需要，则可不执行)

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Mac:

brew update

brew tap josegonzalez/homebrew-php

brew tap homebrew/versions

brew install php55-intl

brew install josegonzalez/php/composer

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更换国内镜像

composer config -g repositories.packagist composer https://packagist.phpcomposer.com

常用命令

install 安装依赖包:

composer install即可安装到项目目录,安装后项目目录会出现composer.lock文件composer通过它来锁定版本

此时如果依赖库需要更新则是使用update 命令 composer update 来更新项目依赖包

install参数

--prefer-source   composer将从源安装

--prefer-dist  composer将直接获取,速度更快

--dry-run 模拟安装

create-project创建依赖包项目:

composer create-project vendor/vendor project

添加依赖:

composer require 

升级composer:

composer self-update

搜索依赖包:

composer search  vendor