I\'ve got an array of arrays that may have a different count of elements when the script is run.
$strict = [ [0] => [\'one\', \'two\', \'three\', \'f
You can take advantage of modern PHP's array packing/unpacking features - aka variadics, or the so-called "splat" (...) operator - as well:
...
$result = array_intersect(...$strict);