--TEST-- Argument unpacking with internal functions --FILE-- <?php $arrays = [ [1, 2, 3], [4, 5, 6], [7, 8, 9], ]; var_dump(array_map(null, ...$arrays)); ?> --EXPECT-- array(3) { [0]=> array(3) { [0]=> int(1) [1]=> int(4) [2]=> int(7) } [1]=> array(3) { [0]=> int(2) [1]=> int(5) [2]=> int(8) } [2]=> array(3) { [0]=> int(3) [1]=> int(6) [2]=> int(9) } }