In a Database I have a string witch obviously represents an array.I don't think that this is a simple array, it looks more like a tree
Tier||0,Tier|Insekte||1,Tier|Insekte|Biene||2,Pflanze||3,Pflanze|Blume||4,Pflanze|Blume|Zinnie||5
Tier
Insekte
Biene
Pflanze
Blume
Zinnie