After removing m elements from the array, refresh the key from 0 ~ N, increasing by 1

After deleting m elements in the array, refresh the key from 0 ~ N, delete n elements in an array incrementing by 1, and refresh the key from 0 ~ N, increment by 1 instead of the key value discontinuous. what should I do ?, The array_values array deletes m elements and reorganizes keys from 0 ~ N, increasing by 1
After deleting n elements in the array, refresh the key from 0 ~ N, increasing by 1
Instead of discontinuing the key value.
What should I do?
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Array_values