1.安装redis扩展
命令：composer require yiisoft/yii2-redis
Git地址：https://github.com/yiisoft/yii2-redis/blob/master/docs/guide/installation.md
2.安装sphinx扩展
命令：composer require --prefer-dist yiisoft/yii2-sphinx
Git地址：https://github.com/yiisoft/yii2-sphinx
3.安装elasticsearch扩展
命令：composer require --prefer-dist yiisoft/yii2-elasticsearch:"~2.0.0"
Git地址：https://github.com/yiisoft/yii2-elasticsearch
4.安装authclient扩展
命令：composer require --prefer-dist yiisoft/yii2-authclient "~2.1.0"
Git地址：https://github.com/yiisoft/yii2-authclient/blob/master/docs/guide/installation.md
5.安装mongodb扩展
命令：composer require --prefer-dist yiisoft/yii2-mongodb
Git地址：https://github.com/yiisoft/yii2-mongodb
注意：php版本需要按照 ext-mongodb 扩展
6.安装debug扩展
命令：composer require --prefer-dist yiisoft/yii2-debug
Git地址：https://github.com/yiisoft/yii2-debug/blob/master/docs/guide-zh-CN/installation.md
7.按装apidoc扩展
命令：composer require --prefer-dist yiisoft/yii2-apidoc
Git地址：https://github.com/yiisoft/yii2-apidoc
8.安装httpclient扩展
命令：composer require --prefer-dist yiisoft/yii2-httpclient "*"
地址：https://www.yiiframework.com/extension/yiisoft/yii2-httpclient/doc/guide/2.0/en/installation
* 官方推荐扩展清单：https://www.yiiframework.com/extensions/official
有兴趣的扩展清单：
https://www.yiiframework.com/extension/huijiewei/yii2-wechat
https://www.yiiframework.com/extension/bizley/jwt
https://www.yiiframework.com/extension/johnsnook/yii2-ip-filter
https://www.yiiframework.com/extension/rob006/yii2-simple-auth
https://www.yiiframework.com/extension/language/yii2-protobuf
https://www.yiiframework.com/extension/yiicod/yii2-socketio
https://www.yiiframework.com/extension/cebe/yii2-lifecycle-behavior
https://www.yiiframework.com/extension/skeeks/yii2-http-basic-auth
https://www.yiiframework.com/extension/tuyakhov/yii2-json-api
https://www.yiiframework.com/extension/devanych/yii2-cart
https://www.yiiframework.com/extension/yiimaker/yii2-social-share
https://www.yiiframework.com/extension/yii2-ip2location
https://www.yiiframework.com/extension/saviorlv/yii2-bd-aipspeech【百度 语音识别】
https://www.yiiframework.com/extension/saviorlv/yii2-dingtalk【钉钉群机器人 ¶】
https://www.yiiframework.com/extension/swoole-foundation/yii2-swoole-extension
https://www.yiiframework.com/extension/vxm/yii2-async【异步】
https://www.yiiframework.com/extension/enchikiben/yii2-sitemap
https://www.yiiframework.com/extension/alcea/yii2-prism-syntax-highlighter
https://www.yiiframework.com/extension/aryelds/yii2-sweet-alert
https://www.yiiframework.com/extension/abushamleh/yii2-opentok
https://www.yiiframework.com/extension/onmotion/yii2-widget-apexcharts
https://www.yiiframework.com/extension/saviorlv/yii2-dysms【阿里云短信】
https://www.yiiframework.com/extension/yii2-sms
https://www.yiiframework.com/extension/odaialali/yii2-qrcode-reader
https://www.yiiframework.com/extension/newerton/yii2-dynamicform【自定义表单】
https://www.yiiframework.com/extension/tuyakhov/yii2-notifications
https://www.yiiframework.com/extension/motion/yii2-language-provider【语言包】
https://www.yiiframework.com/extension/imanilchaudhari/yii2-currency-converter
https://www.yiiframework.com/extension/davidjeddy/yii2-rss-reader
https://www.yiiframework.com/extension/kriss/yii2-beary-chat【聊天室】
https://www.yiiframework.com/extension/immusen/yii2-swoole-websocket
https://www.yiiframework.com/extension/samdark/yii2-webshell【*】
https://www.yiiframework.com/extension/yii2-postman4excel
https://www.yiiframework.com/extension/yii2-robots-txt
https://www.yiiframework.com/extension/yii2-html-compressor-filter
https://www.yiiframework.com/extension/ipv4
https://www.yiiframework.com/extension/yii2-phpexcel【excel】
https://www.yiiframework.com/extension/yii2-excel-message
https://www.yiiframework.com/extension/yii2-workbench
https://www.yiiframework.com/extension/yii2-ga-measurement-protocol
https://www.yiiframework.com/extension/yii2-seotools
https://www.yiiframework.com/extension/yii2-devicedetect 【设备监测】
https://github.com/mougrim/yii2-container-configurator
https://www.yiiframework.com/extension/yii2-system-info 【服务器信息】
https://www.yiiframework.com/extension/yii2-arraysearch【*】
https://www.yiiframework.com/extension/yii2-mpdf 【pdf】
https://www.yiiframework.com/extension/yii2-pdf
https://www.yiiframework.com/extension/yii2-environment
https://github.com/cedx/yii2-json-messages
https://www.yiiframework.com/extension/yii2-meta
https://www.yiiframework.com/extension/yii2-upload-file
https://www.yiiframework.com/extension/yii2-localeurls
https://www.yiiframework.com/extension/yii2-images
https://www.yiiframework.com/extension/yiisoft/yii2-bootstrap4
https://www.yiiframework.com/extension/mludvik/yii2-tags-input
https://www.yiiframework.com/extension/zertex/yii2-avatar-generator【*】
https://www.yiiframework.com/extension/microinginer/yii2-dropdown-action-column
https://www.yiiframework.com/extension/cebe/yii2-gravatar
https://www.yiiframework.com/extension/yiisoft/yii2-twig
https://www.yiiframework.com/extension/aminkt/yii2-app-api