PHP function array_map(?callable $callback, array $array, array ...$arrays) array
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Applies the callback to the elements of the given arrays.
Parameters:
callable|null--$callback--Callback function to run for each element in each array.
array--$array--An array to run through the callback function.
array--...$arrays--[optional]
Returns: an array containing all the elements of arr1 after applying the callback function to each one.