1、composer require topthink/think-captcha没有反应php
首先切换国内conmposer镜像composer
composer config -g repo.packagist composer https://packagist.phpcomposer.com ui
2、而后注意composer安装验证码的镜像地址(注意源地址后面跟了一个1)spa
composer require topthink/think-captcha 1 token