Paul begins to thank the Philippians for a gift that they have sent him. He begins in verse 11 to explain that he is thanking them for this gift simply because he is grateful, not because he needs them to give him anything more.
These two phrases mean basically the same thing. Paul uses them to emphasize that he has learned how to be content in any situation. (See: [[rc://en/ta/man/translate/figs-parallelism]] and [[rc://en/ta/man/translate/figs-merism]])