Question

I have an array named $mark_ary which contains this:

Array
(
    [0] => 61
    [1] => 62
    [2] => 63
    [3] => 64
    [4] => 65
    [5] => 66
    [6] => 67
    [7] => 68
)

And another variable named $special_donors_array which contains this:

Array
(
    [0] => Array
        (
            [group_id] => 4
            [user_id] => 61
            [group_leader] => 0
            [user_pending] => 0
            [username] => tester_8
            [username_clean] => tester_8
            [user_email] => [e-mail]
        )

    [1] => Array
        (
            [group_id] => 5
            [user_id] => 62
            [group_leader] => 0
            [user_pending] => 0
            [username] => tester_9
            [username_clean] => tester_9
            [user_email] => [e-mail]
        )

)

I need to take every [user_id] value from each parent key ([0] and [1] in this case) of the $special_donors_array variable, and use those numbers to UNSET them from the $mark_ary array variable.

After I achieve what I want, the $mark_ary variable would look like this:

Array
(
    [2] => 63
    [3] => 64
    [4] => 65
    [5] => 66
    [6] => 67
    [7] => 68
)

Unfortunately, I can’t even think of a solution and I couldn’t even try a think because I didn’t know how to start this. I still need to gain some more array related knowledge.

Ideas?

Answer 1

foreach($special_donors_array as $special_donor){
                foreach($mark_ary as $k => $mark){
                    if($mark == $special_donor['user_id']){
                        unset($mark_ary[$k]);
                    }
                }
            }