by Altrea » 01. August 2010 22:02
The only component of Joomla which is not yet compatible with PHP 5.3 is OpenID.
All other components should run very well with this PHP version.
And last but not least: XAMPP is a package of several components and just supported as it is (a package).
If you want to upgrade/downgrade one single component, you had to do this on your own.
btw: If you really really want to use PHP 5.2.x, then you can use one of the previour XAMPP releases (recommend XAMPP 1.7.1 with PHP 5.2.9), which can be downloaded at sourceforge
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