首先：
composer require topthink/think-captcha v3.0.8
把这张图片下载，后缀名png改成zip，解压到：
vendor/topthink
标签：thinkphp6,后缀名,captcha,json,为空,topthink From： https://www.cnblogs.com/felixwan/p/16978802.html
首先：
composer require topthink/think-captcha v3.0.8
把这张图片下载，后缀名png改成zip，解压到：
vendor/topthink
标签：thinkphp6,后缀名,captcha,json,为空,topthink From： https://www.cnblogs.com/felixwan/p/16978802.html