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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
XML data storage format support xml, libxml, SimpleXML php-xml
Multi-byte character support mbstring php-mbstring
User information encryption mcrypt php-mcrypt

The following modules are optional

Feature Module name(s) Debian/Ubuntu package name(s)
JSON data storage format support json php-json
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 which modules you have installed with this command...

php -m

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.

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/hashover.js is used instead.

So change:

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


  <script type="text/javascript" src="/hashover/hashover.js"></script>
  • HashOver 2.0 is object oriented, many things have changed places and been renamed. For normal users, about the only thing that is important to know is that the secrets.php file was merged with the settings.php file.

Focus of this release

HashOver version 1.0 consists of code written by one person over the course of five years, come March the 29th 2014. Moreover, HashOver was my first serious use of JavaScript and my first PHP project of such complexity. Those two facts should trigger obvious concerns about HashOver's performance, efficiency, and security. With that in mind, version 2.0 will be the next release, skipping 1.x releases all together, and will focus on improving nothing but the following areas.

  • Security
  • Performance [#61]
  • Code efficiency [#62]
  • Deployment
  • Data storage format [#32]
  • Backwards and forwards compatibility
  • Operating system support
  • Aesthetics and graphics [#4] [#11]
  • Graphic scalability on (xi)HDPI displays [#4] [#11]
  • Code readability [#62] [#63]
  • Bug fixes

This means the possibility of new features in version 2.0 is next to null, and contributions via GitHub and/or e-mail that add new features will be rejected, at least for the time being. Improvements to existing functionality and aesthetics will be accepted. New features will be accepted and available in version 2.x releases.

Information and Documentation



When sending a "Pull Request", committing code, or otherwise sending, submitting, or transmitting code in any other way, please place a GNU Affero General Public License notice or any compatible license notice at the top of the code (if one isn't already present) and assign your contribution's copyright to yourself or "Jacob Barkdull". This gives me the necessary rights to distribute your contribution in HashOver under the GNU Affero General Public License.

HashOver is partially written in JavaScript, plain, standard, non-jQuery JavaScript. If your contribution improves or adds new functionality to the JavaScipt portions of HashOver, your contribution must also be written in plain, standard, non-jQuery JavaScript. Contributions using or assuming the presence of jQuery, Underscore, AngularJS, Prototype, React, Node.js, or any other abstraction layer, library, and/or framework will be rejected.