【PHP】Composer 介绍

如何安装?

官网地址：Composer (getcomposer.org)，目前个人看到的最新版为 2.4.4。

可以先尝试安装官方的介绍一步步操作：

Command-line installation

To quickly install Composer in the current directory, run the following script in your terminal. To automate the installation, use the guide on installing Composer programmatically.

注意：链接对应了类 Unix系统的安装手段。

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
unlink('composer-setup.php'); } echo PHP_EOL;"

php -r "if (hash_file('sha384', 'composer-setup.php') === '55ce33d7678c5a611085589f1f3ddf8b3c52d662cd01d4ba75c0ee0459970c2200a51f492d557530c71c15d8dba01eae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; 

php composer-setup.php

php -r "unlink('composer-setup.php');"

个人在笔记 [[【PHP】PHP开发必备配置 - Windows]] 中提到过这个工具的安装，这里不再重复介绍。

Composer 命令

Composer 命令的常用命令如下：

查看Composer版本

composer --versin

案例：

C:\Users\adong>composer --version
Composer version 2.4.4 2022-10-27 14:39:29

升级将默认升到最新版本

composer self-update

友情提示： 版本升级命令将会从官方版本去下载composer,phar镜像,速度将受限！强烈建议全局配置加速镜像

Composer 自我诊断

使用Composer 进行自我诊断的代码如下：

composer diagnose

参考案例如下：

C:\Users\adong>composer diagnose
Checking platform settings: OK
Checking git settings: OK git version 2.37.0
Checking http connectivity to packagist: OK
Checking https connectivity to packagist: OK
Checking HTTP proxy: OK
Checking github.com rate limit: OK
Checking disk free space: OK
Checking pubkeys:
Tags Public Key Fingerprint: 57815BA2 7E54DC31 7ECC7CC5 573090D0  87719BA6 8F3BB723 4E5D42D0 84A14642
Dev Public Key Fingerprint: 4AC45767 E5EC2265 2F0C1167 CBBB8A2B  0C708369 153E328C AD90147D AFE50952
OK
Checking composer version: OK
Composer version: 2.4.4
PHP version: 7.4.33
PHP binary path: E:\Program Files\php74\php.exe
OpenSSL version: OpenSSL 1.1.1s  1 Nov 2022
cURL version: 7.70.0 libz 1.2.12 ssl OpenSSL/1.1.1s
zip: extension present, unzip not available, 7-Zip not available

清楚缓存

清楚缓存的命令如下

composer clear

具体案例如下：

C:\Users\adong>composer clear
Cache directory does not exist (cache-vcs-dir):
Clearing cache (cache-repo-dir): C:\Users\adong\AppData\Local\Composer\repo
Clearing cache (cache-files-dir): C:\Users\adong\AppData\Local\Composer\files
Clearing cache (cache-dir): C:\Users\adong\AppData\Local\Composer
All caches cleared.

项目更新 composer.lock

composer update --lock

个人测试案例如下：

C:\Users\adong>composer update --lock
Composer could not find a composer.json file in C:\Users\adong
To initialize a project, please create a composer.json file. See https://getcomposer.org/basic-usage

调试

Composer调试只需要在命令前加上-vvv就可以打印出错信息

例如下载laravel命名为blog的项目

composer -vvv create-project laravel/laravel blog

安装依赖包

安装依赖包需要在指定项目的根路径执行下面的操作：

composer install

更新依赖包

该命令仅限在项目根目录操作

更新所有依赖包

composer update

更新指定依赖包

composer update monolog/monolog

更新多个指定依赖包

composer update monolog/monolog symfony/dependency-injection

根据通配符匹配更新依赖包

composer update monolog/monolog symfony/*

移除依赖包

移除指定依赖包

composer remove monolog/monolog

根据通配符匹配移除依赖包

composer remove monolog/monolog symfony/*

搜索依赖包

搜索依赖包：输出包及其描述信息

composer search monolog

使用案例如下：

C:\Users\adong>composer search monolog
monolog/monolog                       Sends your logs to files, sockets, inboxes, databases and various web services
symfony/monolog-bundle                Symfony MonologBundle
symfony/monolog-bridge                Provides integration for Monolog with various Symfony components
symfony/debug-bundle                  Provides a tight integration of the Symfony VarDumper component and the Serv...
maxbanton/cwh                         AWS CloudWatch Handler for Monolog library
easycorp/easy-log-handler             ! Abandoned ! A handler for Monolog that optimizes log me...
theorchard/monolog-cascade            Monolog extension to configure multiple loggers in the blink of an eye and a...
bramus/monolog-colored-line-formatter Colored Line Formatter for Monolog
wazaari/monolog-mysql                 A handler for Monolog that sends messages to MySQL
logentries/logentries-monolog-handler A handler for Monolog that sends messages to Logentries.com.
inpsyde/logzio-monolog                Logz.io integration for Monolog
newrelic/monolog-enricher             Monolog components to enable New Relic Logs
cmdisp/monolog-microsoft-teams        Monolog Handler for sending messages to Microsoft Teams using the Incoming W...
inpsyde/wonolog                       Monolog-based logging package for WordPress.
amphp/log                             Non-blocking logging for PHP based on Amp and Monolog.

只搜索包，可以添加 --only-name选项，如下所示

composer search --only-name monolog

执行命令的返回结果较多：

根据通配符搜索依赖包

composer search mono*

案例如下：

C:\Users\adong>composer  search mono*
mead-steve/mono-snag                         Bugsnag integration for monolog. An abstract handler that sends messages to Bugsnag
digikraaft/mono-php                          PHP Implementation of Mono API
codeat3/blade-mono-icons                     A package to easily make use of Mono Icons in your Laravel Blade views.
yzen.dev/mono-processor                      This Processor will display in the logs bread crumbs by which you can more quickly and accurately identify the cause of the error.
remdex/livehelperchat                        Live Helper Chat - live support for your website. Featuring web and desktop clients. Compatible Windows, Linux, Mac. Desktop client powered by QT. Supports mobile phones based on XMPP se...
aedart/athenaeum                             Athenaeum is a mono repository; a collection of various PHP packages
druidfi/mona-plugin                          Mona Composer Plugin for Drupal 7 sites
dbp/relay-mono-connector-payunity-bundle     A PayUnity connector for the mono bundle for the Relay API gateway
dbp/relay-mono-connector-generic-bundle      A generic connector for the mono payment bundle for the Relay API gateway
dbp/relay-mono-connector-campusonline-bundle A CO payment connector for the mono bundle for the Relay API gateway
dbp/relay-mono-bundle                        A payment bundle for the Relay API gateway
timitao/monoa
loicjazon/mono
druidfi/mona                                 ! Abandoned ! Example setup using mona-plugin
vldmr-k/mono-acquiring                       Monobank Acquiring library

查看依赖包

该命令仅限项目根目录使用

查看当前项目已安装的依赖包

composer show

根据通配符当前项目进行筛选

composer show laravel*

查看当前项目指定依赖包

composer show laravel/tinker