Regex to find html div class content and data-attr? (preg_match_all)

With preg_match_all I want to get class and data-attributes in html.

The example below works, but it only returns class names or only data-id content.

I want the example pattern to find both class and data-id content.

Which regex pattern should I use?

Html contents:

<!-- I want to: $matches[1] == test_class  | $matches[2] == null -->
<div class="test_class"> 

<!-- I want to: $matches[1] == test_class | $matches[2] == 1 -->
<div class="test_class" data-id="1"> 

<!-- I want to: $matches[1] == test_class | $matches[2] == 1 -->
<div class="id="test_id" class="test_class" data-id="1">

<!-- I want to: $matches[1] == test_class test_class2 | $matches[2] == 1 -->
<div class="test_class test_class2" id="test_id" data-id="1">

<!-- I want to: $matches[1] == 1 | $matches[2] == test_class test_class2 -->
<div data-id="1" class="test_class test_class2" id="test_id" >

<!-- I want to: $matches[1] == 1 | $matches[2] == test_class test_class2 -->
<div id="test_id" data-id="1" class="test_class test_class2">

<!-- I want to: $matches[1] == test_class | $matches[2] == 1 -->
<div class="test_class" id="test_id" data-id="1">

The regex that does not work as I want:

$pattern = '/<(div|i)\s.*(class|data-id)="([^"]+)"[^>]*>/i';

preg_match_all($pattern, $content, $matches, PREG_SET_ORDER);

Thanks in advance.