Nested for loops and arrays

Hi, I have 2 arrays of usernames and I want to create a new array containing usernames that are in array1 that arent in array2. It sounds simple in theory but i just cant figure out the logic of how to do it (although I was thinking along the lines of nested for loops). Can any one help?
Cheers.

try this: http://www.php.net/manual/en/function.array-merge.php

given 2 arrays, $array1 and $array2....


<?php


function get_unique($username) {

gobal array2;
foreach ($array2 as $value) {
if ($username == $value) {
return();
}
}

return($username);

}


$new_array = array_filter($array1,"get_unique");

(that *SHOULD* work... ;-P)..

Hint: Use array_diff (http://de.php.net/array_diff).

DUH...that's SOOOO what I meant to put....er......bloody. I even looked at the stupid function when recalling the array_filter() parameters....stinko...

;)

gj.

-Celt

Cheers everyone, big help :D