Get elements starting at given index (default=1) to the end
array:rest(ARRAY $array, INT $index=1) : ARRAY
$arr = ['A', 'B', 'C', 'D']
array:rest($arr)
#=> [
#=> "B",
#=> "C",
#=> "D"
#=> ]
array:rest($arr, 2)
#=> [
#=> "C",
#=> "D"
#=> ]
# index 0, gives you all the array
array:rest($arr, 0)
#=> [
#=> "A",
#=> "B",
#=> "C",
#=> "D"
#=> ]
# if given index is out of range, it returns []
array:rest($arr, 10)
#=> []
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