D:\phpStudy\PHPTutorial\WWW\hashroom>composer require topthink/think-captcha
Using version ^2.0 for topthink/think-captcha
./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-captcha 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, v5.1.3, 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-captcha v2.0.1 requires topthink/framework 5.1.x-dev -> satisfiable by topthink/framework[5.1.x-dev] but these conflict with your requirements or minimum-stability.
- topthink/think-captcha v2.0 requires topthink/framework 5.1.x-dev -> satisfiable by topthink/framework[5.1.x-dev] but these conflict with your requirements or minimum-stability.
- Installation request for topthink/think-captcha ^2.0 -> satisfiable by topthink/think-captcha[v2.0, v2.0.1, v2.0.2].
版本问题
安装1.*版本的扩展包 最新的2.0是用于5.1版本的，如下
composer require topthink/think-captcha=1.*
非这种安装方法
composer require topthink/think-captcha
