图3
1、参考网址：https://www.shuijingwanwq.com/2020/01/19/3869/ ，将 Yii Framework 从 2.0.15.1 版本升级到 2.0.31
2、在一些使用了：\GuzzleHttp\json_encode、\GuzzleHttp\json_decode 的程序中报错，最终分析发现，原因在于，目录：/vendor/guzzlehttp/guzzle、/vendor/guzzlehttp/promises 已经不存在。如图1
3、仔细分析后，发现参考网址中的第 2 个步骤，运行 composer update 时，卸载了：guzzlehttp/promises、guzzlehttp/guzzle，如图2
4、步骤 2 的问题，最终通过 Yii 帮助类 Json： https://www.yiiframework.com/doc/api/2.0/yii-helpers-json 得以解决，执行相应的替换操作
\GuzzleHttp\json_decode \yii\helpers\Json::decode \GuzzleHttp\json_encode \yii\helpers\Json::encode
5、在一个 Yii 2 版本仍然为：2.0.15.1 的分支中，使用 依赖性检测 depends 命令可以查出已安装在你项目中的某个包，是否正在被其它的包所依赖，并列出他们。得出结论：guzzlehttp/promises 依赖于 guzzlehttp/guzzle，guzzlehttp/guzzle 依赖于 codeception/base，codeception/base 依赖于 yiisoft/yii2-app-advanced。如图3
PS E:\wwwroot\pcs-api-feature-config-group-task-step> ./yii
This is Yii version 2.0.15.1.
The following commands are available:
- asset Allows you to combine and compress your JavaScript and CSS files.
asset/compress (default) Combines and compresses the asset files according to the given configuration.
asset/template Creates template of configuration file for [[actionCompress]].
- cache Allows you to flush cache.
cache/flush Flushes given cache components.
cache/flush-all Flushes all caches registered in the system.
cache/flush-schema Clears DB schema cache for a given connection component.
cache/index (default) Lists the caches that can be flushed.
- cmc-console-user 框架服务控制台的用户
cmc-console-user/sync 同步框架服务控制台的用户模型(Http)至框架服务控制台的用户模型(R
edis)
- config-column-user 栏目人员配置
config-column-user/sync 同步框架服务控制台的用户模型(Http)至栏目人员配置模型(MySQL)
- fixture Manages fixture data loading and unloading.
fixture/load (default) Loads the specified fixture data.
fixture/unload Unloads the specified fixtures.
- gii This is the command line version of Gii - a code generator.
gii/controller Controller Generator
gii/crud CRUD Generator
gii/extension Extension Generator
gii/form Form Generator
gii/index (default)
gii/model Model Generator
gii/module Module Generator
- help Provides help information about console commands.
help/index (default) Displays available commands or the detailed information
help/list List all available controllers and actions in machine readable format.
help/list-action-options List all available options for the $action in machine readable format.
help/usage Displays usage information for $action.
- log 日志
log/delete 日志的删除
- message Extracts messages to be translated from source files.
message/config Creates a configuration file for the "extract" command using command line options
specified.
message/config-template Creates a configuration file template for the "extract" command.
message/extract (default) Extracts messages to be translated from source code.
- migrate Manages application migrations.
migrate/create Creates a new migration.
migrate/down Downgrades the application by reverting old migrations.
migrate/fresh Truncates the whole database and starts the migration from the beginning.
migrate/history Displays the migration history.
migrate/mark Modifies the migration history to the specified version.
migrate/new Displays the un-applied new migrations.
migrate/redo Redoes the last few migrations.
migrate/to Upgrades or downgrades till the specified version.
migrate/up (default) Upgrades the application by applying new migrations.
- plan-task 选题任务
plan-task/close 关闭选题任务
- serve Runs PHP built-in web server.
serve/index (default) Runs PHP built-in web server.
To see the help of each command, enter:
yii help <command-name>
PS E:\wwwroot\pcs-api-feature-config-group-task-step> composer depends guzzlehttp/promises
guzzlehttp/guzzle 6.3.3 requires guzzlehttp/promises (^1.0)
PS E:\wwwroot\pcs-api-feature-config-group-task-step> composer depends guzzlehttp/guzzle
codeception/base 2.5.2 requires guzzlehttp/guzzle (>=4.1.4 <7.0)
PS E:\wwwroot\pcs-api-feature-config-group-task-step> composer depends codeception/base
shuijingwan/yii2-app-advanced dev-feature-config-group-task-step requires (for development) codeception/base (^2.2.3)
6、分别查看 codeception/base 的两个版本的 composer.json，Yii Framework 从 2.0.15.1 版本升级到 2.0.31，进而导致 codeception/base 从版本 2.5.2 升级到 2.5.6，而 codeception/base 的版本 2.5.6 已经放弃依赖 guzzlehttp/guzzle。观察可发现，codeception/base 的依赖类型为：require-dev，因此，其仅能够用于开发阶段，而不能够用于生产阶段。
"require-dev": {
"yiisoft/yii2-debug": "~2.0.0",
"yiisoft/yii2-gii": "~2.0.0",
"yiisoft/yii2-faker": "~2.0.0",
"codeception/base": "^2.2.3",
"codeception/verify": "~0.3.1"
},