Composer 常用命令

Centos 安装 composer

curl -sS https://getcomposer.org/installer | php
# 把composer.phar移动到环境下让其变成可执行 
mv composer.phar /usr/bin/composer
chmod +x /usr/bin/composer
# 测试
composer -V 
# 输出：Composer version 1.8.4 2019-02-11 10:52:10

init（初始化）

该命令用于创建 composer.json 文件，并进行基础信息配置：

$ composer init

可以配置Package name、Description、Author、Minimum、Package Type、License、dependencies 及 dev dependencies 信息。

完成后配置文件内容如下：

{
    "name": "touge/oss-media",
    "description": "description...",
    "type": "library",
    "keywords": ["laravel-admin", "extension"],
    "homepage": "https://github.com/touge/oss-media",
    "license": "MIT",
    "authors": [
        {
            "name": "Nick Yuan",
            "email": "lon.y@qq.com"
        }
    ],
    "require": {}
}

search（搜索）

根据名称搜索相关的包，成功后会列出符合的相关包的信息，本处以搜索 monolog 为例：

$ composer search touge
touge/scaffold 
touge/oss-media description...
touge/modules 
touge/laravel-jwt-auth description...
touge/laravel-dict 
touge/laravel-admin-overwrite description...
touge/laravel-admin-ext-media description...
touge/laravel-admin-examination 九育教育考试系统，依赖主系统
touge/elfinder-media laravel-admin elfinder media extension
touge/ckeditor laravel admin extension ckeditor
verbb/super-table Super-charge your Craft workflow with Super Table. Use it to group fields together or build complex Matrix-in-Matrix solutions.
spatie/laravel-varnish Making Varnish and Laravel play nice together
bryglen/yii2-apns-gcm Yii 2 Apns and Gcm together
acquia/orca A tool for testing a company's software packages together in the context of a realistic, functioning, best practices Drupal build
yiiext/activerecord-relation-behavior Inspired by and put together the awesomeness of many yii extensions that aim to improve saving of related records. Comes with 100% test coverage and well structured and clean code so it can savely be used in enterprise production enviroment.

show（详情）

根据包的名称，列出包的相关信息，本处以查看 touge/oss-meida 为例：

name     : touge/oss-media
descrip. : description...
keywords : extension, laravel-admin
versions : dev-master, v1.0.0, v0.1.6
latest   : v1.0.0
type     : library
license  : MIT License (MIT) (OSI approved) https://spdx.org/licenses/MIT.html#licenseText
source   : [git] https://github.com/touge/oss-media.git 8b76168840a08370018090da1af3455ffdaa67ac
dist     : [zip] https://api.github.com/repos/touge/oss-media/zipball/8b76168840a08370018090da1af3455ffdaa67ac 8b76168840a08370018090da1af3455ffdaa67ac
names    : touge/oss-media

autoload
psr-4
Touge\OssMedia\ => src/

requires
php >=7.0.0
encore/laravel-admin ~1.6
aliyuncs/oss-sdk-php ^2.3
guzzlehttp/guzzle ^6.3

requires (dev)
phpunit/phpunit ~6.0

想查看更多信息，就亲自将该命令复制到命令行执行吧。

install (安装)

我们先在 composer.json 配置require中添加一个 touge/oss-media 依赖库，如下：

    "require": {
        "touge/oss-media": "1.21.*",
    }

然后通过如下命令进行安装依赖
$ composer install

update （更新）

如果我们新增或者删除了某个依赖，可以通过如下命令进行更新
$ composer update

require （申明依赖）

我们也可以用命令直接添加依赖，执行该命令后将自动下载，命令如下：

$ composer require touge/oss-media