Php service issue (flash builder 4)

Question

I started playing with Data/Services panel in FB4. Works pretty nice so far but there are a few issues I have:
1. How can I manualy configure input types for the service? The dialog that appears is buggy - size is very small and I can't select input types there. Also changing method definithion in services.myservice._Super_MyService.as file (which is auto-generated) doesn't work - when I refresh or do something else FB4 just rewrites this file...
2. Second issue is PHP related. I didn't use PHP for several years so my knowledge is still limited. I've created a service class like this:
<?php
class MyService {
public function addUser($username, $password) {
  $connection =
mysqli_connect('127.0.0.1', 'root', 'root', myDB, 3306) or
die(mysqli_connect_error());
  $query = "INSERT INTO users (username,
password, role)
      VALUES ('$username', PASSWORD('$password'),
'visitor')";
  mysqli_query($connection, $query) or
die(mysqli_error($connection));
?>
and it works. But if I move $connection variable outside function (to use it with other methods) I get some errors.. Anyone knows why and how to do this? Tried it with different access modifiers, wrapping it in separate function, but nothing helps..
Thanks

Answer 1

Thanks for your inputs. I will look into that construct thingie (:
As for 'Configure Input Types' dialogue, I can also use it in most cases, but some times it's static size isn't sufficient. For example, try adding this function to service:
public function addUserData($username, $firstName, $lastName, $company, $jobTitle,
        $country, $state, $city, $zipCode, $address, $eMail,
        $phone, $cell, $fax, $webPage, $pictureURL) {
On my PC when trying to change values, only one row is visible, and when I try to 'Select Type' for it, dropdown just closes without changing value. It would be nice if we could resize 'Configure Input Types' dialogue when needed... Or maybe just limit the size of 'Operation:' string in that dialogue..
PS. I just played with it for a bit. If you enter too long function name select window completly disappears:
public function abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz($abcdefghijklmnopqrstuvwxyz) {}