Description:
------------
When running the following code on PHP 7.0.12 and 7.0.13, a different result is returned.

In the later version, the user and pass attributes are missing. This _only_ occurs when the first character of the password is # (hash/pound). Strong passwords can often include the # symbol so this is unexpected behaviour.

I've not raised a bug in PHP before, please let me know if you need further information to resolve this!

Test script:
---------------
<?php
    $url = "mysql://user:#fhdsjfghjdf@host.eu-west-1.rds.amazonaws.com:3306/database_name";
    var_dump(parse_url($url));


Expected result:
----------------
array(6) {
  ["scheme"]=>
  string(5) "mysql"
  ["host"]=>
  string(32) "host.eu-west-1.rds.amazonaws.com"
  ["port"]=>
  int(3306)
  ["user"]=>
  string(4) "user"
  ["pass"]=>
  string(12) "#fhdsjfghjdf"
  ["path"]=>
  string(14) "/database_name"
}

Actual result:
--------------
array(3) {
  ["scheme"]=>
  string(5) "mysql"
  ["host"]=>
  string(4) "user"
  ["fragment"]=>
  string(63) "fhdsjfghjdf@host.eu-west-1.rds.amazonaws.com:3306/database_name"
}