Fixed.

It was an issue after all, actual and expected are flipped for PHP.

It is not an issue it is correct: check the description again.

In PHP, I get an error that says:

Expected: Array (

0 => 1

1 => 1

2 => 1

3 => 3

4 => 5

5 => 9

6 => 17

7 => 31

8 => 57

9 => 105

10 => 193

)

However when I look at the test cases it says:

$this->assertEquals(tribonacci([1,1,1],10),[1,1,1,3,5,9,17,31,57,105]);