Technical Requirements
Requirements for Joomla 1.5.x
| Software | Recommended | Minimum | More information |
| PHP* | 5.2 + | 4.3.10 | http://www.php.net |
| MySQL** | 4.1.x + | 3.23 | http://www.mysql.com |
| Apache*** (with mod_mysql, mod_xml, and mod_zlib) | 2.x + | 1.3 | http://www.apache.org |
| Microsoft IIS**** | 7 | 6 | http://www.iis.net |
Requirements for Joomla 1.0.x
| Software | Recommended | Minimum | More information |
| PHP* | 5.2 + | 4.2 | http://www.php.net |
| MySQL** | 4.1.x + | 3.23 | http://www.mysql.com |
| Apache*** (with mod_mysql, mod_xml, and mod_zlib) | 2.x + | 1.3 | http://www.apache.org |
| Microsoft IIS**** | 7 | 6 | http://www.iis.net |
*Do not use PHP 4.3.9, 4.4.2 or 5.0.4. These releases have known bugs that will interfere with installation. Zend Optimizer 2.5.10 for PHP 4.4.x also has serious bugs and you should ask your host to upgrade to a newer version.
**Joomla is not yet compatible with MySQL 6.x
***In order to use SEO URLs, you will need to have the Apache mod_rewrite extension installed.
****Joomla is optimized for Apache, but also runs on Microsoft IIS (though not officially supported). Depending on your setup, you may need the following:
- PHP 5.2 - Installation instructions
- MySQL 5.1 - Installation instructions
- Apache 2.2 - Installation instructions
- Microsoft URL Rewrite Module - Required for SEO URLs only. For more information, click here. For information about using ISAPI, click here.
- FastCGI - Download for IIS6. Download for IIS7.
For further assistance using Microsoft IIS, visit the Joomla IIS forum.
In May 2008, it was announced that Joomla 1.6 will require PHP 5.2+ and MySQL 4.1+. Click here for more information.
Configuration Options
If installing on a local computer, there are a number of packages that will help you get set up quicker than individual installations:
- LAMP (Linux) - Most Linux distributions come with a pre-configured LAMP server.
- WAMP (Windows) - For more information, visit http://www.wampserver.com
- MAMP (Macintosh) - For more information, visit http://www.mamp.info
- XAMPP (Multi-platform) - Not for live sites. For more information, visit http://www.apachefriends.org/en/xampp.html
If you need other options, we recommend visiting our installation forums for more information.