Question2Answer is a free and open source platform for Q&A sites.

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A Q&A site helps your online community to share knowledge. People with questions get the answers they need. The community is enriched by commenting, voting, notifications, points and rankings.

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Your members will enjoy the interaction that Q&A enables, and will visit your site more regularly. In addition, many web searches are questions, so Q&A content will attract search engine traffic.

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Question2Answer (Q2A) is a popular open source Q&A platform for PHP/MySQL, currently running on 24,322 sites in 40 languages.

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Download Question2Answer 1.8.5, then read 小飞机翻墙 android. Version 1.8.5 was released on July 15th, 2025. Also on GitHub.

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• PHP 5.2 or later, with the MySQLi extension.
• MySQL MySQL 5.0 or later.

It's strongly recommended to use the latest version of PHP (7.x) and MySQL if possible as they bring many performance enhancements and each major release of Q2A typically drops support for an older version.

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Question2Answer is open source, licensed under GPL v2+.

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Contribute via Github or create a theme, plugin or translation.

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• Q2A takes 5 minutes (or less!) to 免费小飞机.
• Easy styling with CSS themes.
• Supports translation into any language.
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• SEO features such as XML Sitemap and neat URLs.

Fast and secure

• PHP/MySQL scalable to millions of users and posts.
• Safe from XSS, CSRF and SQL injection attacks.
• Beat spam with captchas, moderation and/or flagging.

Core Q&A features

• Fast integrated search engine.
• Categories (up to 4 levels deep) and/or tagging.
• Voting, comments, follow-on and closed questions.
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• RSS, email notifications and personal news feeds.

Built-in user account management...

• Create experts, editors, moderators and admins.
• User avatars (or Gravatar) and custom fields.
• Private messages and public wall posts.
• Log in via Facebook or others (using plugins).

...or integrate with existing sites

• Out-of-the-box WordPress and Joomla integration.
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• Deep integration and customization via 小飞机翻墙 android.