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HashOver 2.0 (development)

HashOver is a PHP comment system intended as a replacement for services like Disqus. HashOver is free and open source software, under the GNU Affero General Public License. HashOver adds a "comment section" to any website, by placing a few simple lines of JavaScript or PHP to the source code of any webpage. HashOver is a self-hosted system and allows completely anonymous comments to be posted, the only required information is the comment itself.

Notable Features

General Customization Advanced
Threaded replies Multiple themes Allows limited use of HTML
Comment editing & deletion Customizable HTML Multiple comment sorting methods
Likes & Dislikes Comment layout template Spam filtering
Popular comments section Customizable CSS Notification emails
Multiple languages File format plugins Comment RSS feeds
Automatic URL links Authentication plugins Referrer checking
Administration Comment permalinks
Avatar icons IP address blocking
Display remote images

Required modules/compilation

Although most PHP installations include everything HashOver requires by default, depending on your setup you may need to install some modules/extensions and/or ensure PHP was compiled with support for the following modules.

Feature Module name(s) Debian/Ubuntu package name(s)
Date and Time date part of PHP core
Document Object Model dom part of PHP core
Regular Expressions pcre part of PHP core
User information encryption openssl part of PHP core
Multi-byte character support mbstring php-mbstring
Internationalisation intl php-intl
XML data storage format support xml, libxml, SimpleXML php-xml
JSON data storage format support json php-json

The following modules are optional

Feature Module name(s) Debian/Ubuntu package name(s)
PHP Data Objects PDO php-sqlite3, php-mysql
SQLite file format support pdo_sqlite, sqlite3 php-sqlite3

Checking for required modules

On UNIX (GNU, BSD, etc) you may list installed modules with this command:

php -m

On Windows the command to list installed modules is:

php.exe -m

Important differences from version 1.0

  • hashover.php is no longer used in JavaScript tags, the file /hashover/comments.php is used instead.

    So change:

    <script type="text/javascript" src="/hashover.php"></script>


    <script type="text/javascript" src="/hashover/comments.php"></script>

Important recent changes to version 2.0

  • The pages directory is now comments/threads, this change will cause existing comments to not appear until you move the directories under pages into the new comments/threads directory.

  • All JSON config files have been moved to the new config directory, you will need to move the files hashover/blocklist.json and hashover/ignored-queries.json into the new config directory. If these files do not exist, you don't need to do anything as these config files are completely optional.

  • The previously removed secrets.php file has returned. The required setup information, namely the notification e-mail address, encryption key, and the admin username and password are now stored in this secrets.php file located at /hashover/backend/classes/secrets.php.

    You will need to move the values of the public properties $notificationEmail, $encryptionKey, $adminName, and $adminPassword in the settings.php file into the new protected properties in the secrets.php file, and remove these properties from settings.php or replace the settings.php file entirely, as its source code is publicly viewable, whereas the source code of secrets.php is not.

HashOver on Windows

Windows will be officially supported by HashOver 2.0, there should not be any major issues with using HashOver on Windows. However, HashOver is primarily developed on and for UNIX operating systems, which are the primary operating systems used by the majority of web servers. If you have any issues with HashOver on Windows, please report them.

Information and Documentation

Official HashOver 2.0 Documentation