As of PHP 8.2 the use of `${var}` has been deprecated. This is returning multiple notices throughout the Opigno suite of modules. Working on replacing them.
$key = implode('_', [
$group_id,
$uid,
]);
Will generate the same key string.
Also to note, drupal_static will be deprecated in Drupal 11, so this will need to be addressed.
@see https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation
Active
3.1
Code