Discuz! X3.5 Official Released 2026.05.04 (EOL)

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We are pleased to have brought you the official release of Discuz! X3.5 on December 21, 2022. It has been one year since the release of X3.5. As the latest version of the Discuz! X series, X3.5 is also one of the most stable and popular versions to date. Built upon its predecessor, it offers optimizations, improvements, additional features, and a better user experience.

X3.5 is no longer being updated. Unless a major vulnerability is discovered, there will be no further updates to the X3.5 version. Please use X5.0 instead.

The official version supports upgrades from any version below X3.5.

X3.5 System Requirements

• Security Notice: We strongly recommend using operating systems, web servers, PHP, databases, in-memory caches, and other software that are still within the development team's support period. Software beyond its support period may introduce unknown security risks to your site.
• Performance Notice: When MySQL < 5.7 or MariaDB < 10.2, InnoDB performance degrades significantly. For production environments, please upgrade to MySQL >= 5.7 or MariaDB >= 10.2 to avoid this issue.
  
  

Software	Minimum Requirement	Recommended Version	Notes
PHP	>= 5.6.0	7.4 – 8.2	Requires XML extension, JSON extension, GD extension >= 1.0
MySQL	>= 5.5.3	8.0	If using MariaDB, recommended version is >= 10.2

Key Highlights of X3.5

• Support for PHP 8
• Support for MySQL 8
• Support for IPv6, multiple IP libraries, real IP retrieval for different CDN modes, with extensible retrieval methods
• Support for UTF8MB4 (includes emoji support and extended character support)
• Support for InnoDB (now widely recommended for cloud databases)
• Full module toggling (including the forum module — from now on, Discuz! X is not just a forum but a full-stack website building system)
• Brand new payment system with built-in WeChat Pay, Alipay, and QQ Wallet, plus support for extending additional payment gateways and third-party payment API calls
• Built-in security-focused mobile phone layer with third-party SMS API integration
• More refined and modern mobile version
• Brand new admin panel design
• More secure password encryption
• Improved HTTPS support
• HTML5 fully replaces Flash
  
  

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Discuz! X3.5 Download URLs:
TC_UTF8(20260504) (md5 checksum 121ea7fee193796694a9d3c5a4f5bc49 ) :

1. https://discuzstore.com/vip/Discuz_X3.5_TC_UTF8_20260504.zip

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SC_UTF8(20260504) (md5 checksum ba451553abda99bb8e8cdcdf827148f6 ) :

1. https://discuzstore.com/vip/Discuz_X3.5_SC_UTF8_20260504.zip

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