Thanks Till, - I found it.
$go_info["server"]["apache2_php"] = 'both';
$go_info["server"]["apache2_php"] = 'suphp';
and it works.
Basically i thought this line would refer to addtype etc., so i missunderstood the advise given.
What i still do not understand is how to use the possible options though:
'filter' = set PHP filters,
'addtype' = Set PHP addtype
'both' = Set Filter + Addtype,
suphp = SuPHP wrapper enabled,
'addhandler' = Set PHP AddHandler (nescessary for SuSE 10.2)
So in my case i use suphp. But what if i want 'suphp' and 'addhandler'?