php - How to remove duplicate values from a multi-dimensional array in PHP with custom condition

Question

It's a similar question to this one, but sligthly different and I found no answers so far. Take a look at this:

Array
(
    [0] => Array
    (
        ['id'] => abc
        ['value'] => XXX
    )

    [1] => Array
    (
        ['id'] => abc
        ['value'] => ooo
    )

    [2] => Array
    (
        ['id'] => abc
        ['value'] => qqq
    )

    [3] => Array
    (
        ['id'] => ghi
        ['value'] => YYY
    )

    [4] => Array
    (
        ['id'] => ghi
        ['value'] => jkl
    )

    [5] => Array
    (
        ['id'] => ghi
        ['value'] => XXX
    )

    [6] => Array
    (
        ['id'] => mno
        ['value'] => pql
    )
)

I want to identify all duplicate values in 2-d arrays, and remove them with a custom condition, as for example in uasort.

For example take the first 3 elements [0], [1], [2]:

I want that XXX wins over the others, so the [1] and [2] will be removed,

Same for [3], [4], and [5]: they have the same id, but YYY wins over XXX and other values.

Since these are data retrieved from a DBMS, one alternative I have is to make N different queries passing the next query the id to exclude, e.g.: "

1. Find all elements with YYY
2. Find all elements with XXX but that haven't been already found while looking for YYY
3. Find all elements without YYY and XXX that haven't been already found while looking for YYY or XXX.

Any help would be appreciated, hope it's all understandable.

Linuxatico