Is there a captcha available for PHP which displays Chinese characters but isn't JavaScript dependent?
BotDetect captcha supports Chinese characters since the version 3.0 http://captcha.biz/localizations/chinese-captcha.html
A few days ago they released PHP version as well. http://captcha.biz/php-captcha.html
It works with JavaScript disabled.
take a look at this http://www.phpkode.com/scripts/item/hippo-chinese-cert-code/
hope it helps
来源：https://stackoverflow.com/questions/6042022/php-chinese-captcha