language PHP 7.0

$this->assertEquals(last($string), $answer);

• expected and actual mixed up positions.

• If two words have the same last letter, they returned array should show them in the order they appeared in the given string.
  thats wrong to!

Input string:
uvrov kltfopf erzf ixdm

Failed asserting that two arrays are equal.
Actual: Array (
    0 => 'kltfopf'
    1 => 'erzf'
    2 => 'ixdm'
    3 => 'uvrov'
)
Expected: Array (
    0 => 'erzf'
    1 => 'kltfopf'
    2 => 'ixdm'
    3 => 'uvrov'
)