How to sort DESC in array multisort?

I wanted to use array_multisort to first sort DESC on the IDs, and then on the values DESC. i.e. I wanted to show the highest values first, but in case of two (or more) objects with the same value, the higher ID would be shown first.
For More Information Please Refer:
https://www.php.net/manual/en/function.array-multisort.php
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