IMPORTANT: 4.3 requires Joomla 2.5.x
Before beginning the install process, please verify that your server meets the requirements for CiviCRM 4.3.
- Joomla 2.5.x : CiviCRM 4.3 is built to run under Joomla 2.5x and is not compatible with Joomla 1.0.x and Joomla 1.5.x sites.
- PHP 5.3.1+ or 5.3.x : Starting with the 1.9 release, CiviCRM will NOT run on PHP 4 servers.\ (more info...).
- MySQL 5.1.x or higher with INNODB support : CiviCRM is compatible the current generally available MySQL release. Trigger permission is required. SUPER privileges are required in MySQL 5.1 if binary logging is enabled. See the CiviCRM MySQL Permission Requirements page.
- PCRE with Unicode properties support (more info).
If you are upgrading from v3.3, v3.4, v4.1 or an earlier version of 4.3 - use these instructions.