Description:
------------
When running parse_url on an url ending in `?` (such as https://example.com?), parse_url behaves differently in PHP8.0.0 than it did in PHP 7.x. It now adds a `query` array key containing an empty string, which wasn't the case previously.

Test script:
---------------
var_dump(parse_url('https://example.com?'));

see: https://3v4l.org/etR9T

Expected result:
----------------
array(2) {
  ["scheme"]=>
  string(5) "https"
  ["host"]=>
  string(11) "example.com"
}

The result should be the same as in PHP7.x

Actual result:
--------------
array(3) {
  ["scheme"]=>
  string(5) "https"
  ["host"]=>
  string(11) "example.com"
  ["query"]=>
  string(0) ""
}