Thread:Project:Support desk/Fatal error update to Mediawii 1.23: DatabaseBase::factory no viable database extension found for type 'mysql'/reply (6)

> So, i think it's a host configuration problem in some tricky way :)

I have checked with the PHP manual: version_compare should be present with 5.2 and the way it is used in the code - according to the manual - is correct. The code of 1.23 is identical to the code of master, which you linked. To me it is not understandable, how this problem here can arise...