Array unsetting keys - php

Question

Straight to the point...
I have an array ($is_anonymous_ary) that looks like this:
array (
[80] => 1
[57] => 1
[66] =>
[60] =>
[90] => 1
)
And another array ($user_id_ary) like this one:
array (
[0] => 80
[1] => 30
[2] => 57
[3] => 89
[4] => 66
[5] => 60
[6] => 90
)
I need to unset values on the $user_id_ary based on the first array. So, if the value from $is_anonymous_ary is 1 (true), then take the key from that array, check against $user_id_ary, and unset the keys from $user_id_ary which had the value from the keys from $is_anonymous_ary.
I complicated the description a bit, here is how I need my final result:
user_id_ary = array(
[0] => 30
[1] => 89
[2] => 66
[3] => 60
)
As you see all keys from the $is_anonymous_ary that had a TRUE value, are gone in the second array. which had the keys from the first array as values in the second array.
Hope I made myself clear.

Answer 1

Try array_filter:
$user_id_ary = array_filter($user_id_ary, function($var) use ($is_anonymous_ary) {
return !(isset($is_anonymous_ary[$var]) && $is_anonymous_ary[$var] === 1);
});

Answer 2

foreach($user_id_ary as $id){
if($is_anonymous_ary[$id] == '1'){
unset($d);
}
}
if this wont work, try to iterate thru each elem in user_id_array

Answer 3

$user_id_ary = array_diff($user_id_ary, array_keys(array_filter($is_anonymous_ary)));

Answer 4

How easy:)
$new_array =NULL;
foreach($is_anonymous_ary as $key=>$value){
$new_array[] = array_search($key, $user_id_ary);
unset($is_anonymous_ary[$key]);
}
$user_id_ary = $new_array;