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Plugin Description
在 WordPress 登陆、注册或评论表单中加入验证码，支持字母、数字、中文和算术形式。用户需要输入验证码才可以进行进一步操作，这可以有效阻止机器人发表垃圾评论或暴力破解密码，增加安全性。
如果需要在登陆密码输错若干次后限制该 IP 登陆，或拉入黑名单，可以将本插件配合 Limit Login Attempts Reloaded 插件使用。
Adds Captcha code anti-spam methods to WordPress forms. Forms include login form, registration form, lost password form and comments form. In order to post comments or register, users will have to type in the code shown on the image. This prevents spam from automated bots, and increase security.
Features
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管理员可以设置在哪些情况下需要输入验证码。
Administrator can specify where the Captcha should be displayed.
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管理员可以选择验证码的字符类型：字母、数字、混合或者中文。
Administrator can select the Captcha type from the options available – Alphanumeric, Alphabets, Numbers or Chinese characters.
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管理员可以选择验证码的字母类型：大写、小写或大小写混合。
Administrator can select the letters type from the options available – Capital letters, Small letters or Both.
Requirements
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生成验证码的 ‘imagettftext()’ 函数需要 gd 库和 FreeType 支持。您可以通过执行 ‘php -m’ 或 ‘phpinfo()’ 检查 php 是否具有此拓展，以确保验证码能够正确显示。
PHP gd2 extension is required. You can run ‘php -m’ or use ‘phpinfo()’ to check if it’s installed properly.
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为了避免出现安全问题，建议将 PHP 更新至 7.4 以上的版本，WordPress 更新至最新版本。
Upgrade your PHP and WordPress to the latest version to avoid security vulnerabilities.
Support
感谢您下载安装这个插件。您可以通过氪金来支持我们继续开发。博客页面：
Thanks for downloading and installing this plugin. You can show your appreciation and support future development by donating. Blog page:
WordPress中文验证码
Development
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Active development of this plugin is handled on GitHub.
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Translation of the plugin into different languages is on the translation page.
Note
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如果您发现了任何 BUG，请通过上方的 GitHub 仓库页面进行报告，这样我们才能尽快修正。
If you find any bugs, please report in the GitHub repository above, so that it will be fixed as soon as possible.
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如果您认为可以增加新功能，请通过上方的 GitHub 仓库页面给我们建议。
If you think any feature adding to this plugin can improve its features, please recommend it in the GitHub repository above.
Known Issues
本插件使用了 SESSION 存储用户信息，这可能造成性能瓶颈。建议通过在 php.ini 中设置 session.save_handler 为 redis 或 memcached（均需要安装拓展），以提升性能。
This plugin uses SESSION to save user information, you can configure redis or memcached server in your php.ini for better performance.
TODO List
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设置黑名单（根据用户名，或者 IP 地址）
Blocklist
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允许用户选择下载字体库
Provide more user selectable fonts
Credits
本项目从 Vinoj Cardoza 的 Captcha Code，BestWebSoft 的 Google Captcha 和 Sola 的 User Generate Password 插件中获得了灵感。这些项目的重要信息摘录如下：
This plugin is inspired by some other plugins. More information about them is listed below:
Plugin Name: Captcha Code
Plugin URI: https://cn.wordpress.org/plugins/captcha-code-authentication/
Description: Adds Captcha Code anti-spam methods to User front-end WordPress forms.
Author: Vinoj Cardoza
Author URI: https://www.cardozatechnologies.com
License: GPL2
Plugin Name: Google Captcha (reCAPTCHA) by BestWebSoft
Plugin URI: https://cn.wordpress.org/plugins/google-captcha/
Description: Protect WordPress website forms from spam entries with Google Captcha (reCaptcha).
Author: BestWebSoft
Author URI: https://bestwebsoft.com
License: GPLv3 or later
Plugin Name: User Generate Password
Plugin URI: https://www.solagirl.net/wordpress-user-generate-password.html
Description: Let user enter password instead of generated by WordPress when sign up. 用户注册时可以输入密码。
Author: Sola
Author URI: https://www.solagirl.net
License: Unknown
Screenshots
Login form with Mimi Captcha
Registration form with Mimi Captcha
Lost Password form with Mimi Captcha
Comments form with Mimi Captcha
Comments form with Mimi Captcha
Mimi Captcha settings page
