$ composer require topthink/think-worker
Using version ^2.0 for topthink/think-worker
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- topthink/think-worker v2.0.9 requires topthink/framework ^5.1.18 -> satisfiable by topthink/framework[5.1.x-dev, 5.2.x-dev, v5.1.18, v5.1.19, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.30, v5.1.31, v5.1.32, v5.2-beta.2] but these conflict with your requirementsor minimum-stability.
- topthink/think-worker v2.0.8 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.7 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.6 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.5 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.4 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.3 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.2 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.11 requires topthink/framework ^5.1.18 -> satisfiable by topthink/framework[5.1.x-dev, 5.2.x-dev, v5.1.18, v5.1.19, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.30, v5.1.31, v5.1.32, v5.2-beta.2] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.10 requires topthink/framework ^5.1.18 -> satisfiable by topthink/framework[5.1.x-dev, 5.2.x-dev, v5.1.18, v5.1.19, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.30, v5.1.31, v5.1.32, v5.2-beta.2] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.1 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.0 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- Installation request for topthink/think-worker ^2.0 -> satisfiable by topthink/think-worker[v2.0.0, v2.0.1, v2.0.10, v2.0.11, v2.0.2, v2.0.3, v2.0.4, v2.0.5, v2.0.6, v2.0.7, v2.0.8, v2.0.9].

Installation failed, reverting ./composer.json to its original content.
以上信息显示composer在更新composer.json文件后，在安装依赖时报错Your requirements could not be resolved to an installable set of packages，意思就是请求无法解析为可用的安装包，为什么呢？

我们来看提示部分问题，告诉我们topthink/think-worker v2.0.*相关版本需要依赖的是TP5.1版本，而我的TP版本是5.0.*

Problem 1
- topthink/think-worker v2.0.9 requires topthink/framework ^5.1.18 -> satisfiable by topthink/framework[5.1.x-dev, 5.2.x-dev, v5.1.18, v5.1.19, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.30, v5.1.31, v5.1.32, v5.2-beta.2] but these conflict with your requirementsor minimum-stability.
- topthink/think-worker v2.0.8 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.7 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.6 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.5 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.4 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.3 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.2 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.11 requires topthink/framework ^5.1.18 -> satisfiable by topthink/framework[5.1.x-dev, 5.2.x-dev, v5.1.18, v5.1.19, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.30, v5.1.31, v5.1.32, v5.2-beta.2] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.10 requires topthink/framework ^5.1.18 -> satisfiable by topthink/framework[5.1.x-dev, 5.2.x-dev, v5.1.18, v5.1.19, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.30, v5.1.31, v5.1.32, v5.2-beta.2] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.1 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- topthink/think-worker v2.0.0 requires topthink/framework 5.1.* -> satisfiable by topthink/framework[5.1.x-dev, v5.1-beta.1, v5.1-rc.1, v5.1-rc.2, v5.1-rc.3, v5.1.0, v5.1.1, v5.1.10, v5.1.11, v5.1.12, v5.1.13, v5.1.14, v5.1.15, v5.1.16, v5.1.17, v5.1.18, v5.1.19, v5.1.2, v5.1.20, v5.1.21, v5.1.22, v5.1.23, v5.1.24, v5.1.25, v5.1.26, v5.1.27, v5.1.28, v5.1.29, v5.1.3, v5.1.30, v5.1.31, v5.1.32, v5.1.4, v5.1.5, v5.1.6, v5.1.7, v5.1.8, v5.1.9] but these conflict with your requirements or minimum-stability.
- Installation request for topthink/think-worker ^2.0 -> satisfiable by topthink/think-worker[v2.0.0, v2.0.1, v2.0.10, v2.0.11, v2.0.2, v2.0.3, v2.0.4, v2.0.5, v2.0.6, v2.0.7, v2.0.8, v2.0.9].

明确了问题，那我们在安装topthink/think-worker时就相应选择低版本的，这里我们尝试使用1.0.*版本的

$ composer require topthink/think-worker=1.0.*
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 11 installs, 0 updates, 0 removals
- Installing topthink/think-installer (v1.0.12): Downloading (100%)
- Installing topthink/framework (v5.0.23): Downloading (100%)
- Installing topthink/think-image (v1.0.7): Downloading (100%)
- Installing topthink/think-captcha (v1.0.7): Downloading (100%)
- Installing topthink/think-mongo (v1.8.5): Downloading (100%)
- Installing topthink/think-migration (v1.1.1): Downloading (100%)
- Installing topthink/think-helper (v1.0.7): Downloading (100%)
- Installing topthink/think-queue (v1.1.6): Downloading (100%)
File application\extra\queue.php exist!
- Installing phpmailer/phpmailer (v6.0.6): Downloading (100%)
- Installing workerman/workerman (v3.5.17): Loading from cache
- Installing topthink/think-worker (v1.0.1): Downloading (100%)
phpmailer/phpmailer suggests installing psr/log (For optional PSR-3 debug logging)
phpmailer/phpmailer suggests installing league/oauth2-google (Needed for GoogleXOAUTH2 authentication)
phpmailer/phpmailer suggests installing hayageek/oauth2-yahoo (Needed for YahooXOAUTH2 authentication)
phpmailer/phpmailer suggests installing stevenmaguire/oauth2-microsoft (Needed for Microsoft XOAUTH2 authentication)
phpmailer/phpmailer suggests installing symfony/polyfill-mbstring (To support UTF-8 if the Mbstring PHP extension is not enabled (^1.2))
workerman/workerman suggests installing ext-event (For better performance. )
Writing lock file
Generating autoload files

安装成功后，根据tp5.0官方手册，如果需要在windows下做服务端，还需要安装workerman/workerman-for-win

$ composer require workerman/workerman-for-win
Using version ^3.5 for workerman/workerman-for-win
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
- Installing workerman/workerman-for-win (v3.5.1):Downloading (100%) )
Writing lock file
Generating autoload files

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