Only define functions if they have not been defined before, e.g. in themes. This makes it possible to override parts of a module and still use the other functions.
Friendica is a communications platform for integrated social communications utilising decentralised communications and linkage to several indie social projects - as well as popular mainstream providers.
Our mission is to free our friends and families from the clutches of data-harvesting corporations, and pave the way to a future where social communications are free and open and flow between alternate providers as easily as email does today.