Is there an error with Treehouse's code challenge on PHP arrays?

The code challenge is telling me to add a key of "title" and a value of "The Empire Strikes Back."

I have added it this way:

$movie = []; //I have also tried $movie=array(); $movie[] = ["title" => "The Empire Strikes Back"]; //the attached code is a different variation of this

The code challenge keeps giving back the error: "Have you assigned a value to key 'title'?" I changed the code to what is attached now, and I see the new error message, "Did you assign the value of 'title' to 'The Empire Strikes Back'?"

I don't see my error, and I have re-watched the video. I don't see any missing semi-colons, etc.

Is it my error or Treehouse's coding challenge?

<?php
$movie = [];
$movie["title"] = ["The Empire Strikes Back"];

?>
<h1>Back to the Future (1985)</h1>

<table>
  <tr>
    <th>Director</th>
    <td>Robert Zemeckis</td>
  </tr>
  <tr>
    <th>IMDB Rating</th>
    <td>8.5</td>
  </tr>
  <tr>
    <th>IMDB Ranking</th>
    <td>53</td>
  </tr>
</table>