array_intersect() with dynamic length of arguments

Question

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         


        

Answer 1

You can use call_user_func_array:

Call a callback with an array of parameters

So your callback would be array_intersect, and you could pass your array like this:

$result = call_user_func_array('array_intersect', $strict);

Answer 2

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);