[PHP]Unikalne wartości, z tablicy dwuwymiarowej Opcje

[-merrit-]

Jak uzyskać tablicę bez powtarzających się wartości [link] w następującej tablicy?

Kod

Array
(
    [0] => Array
        (
            [title] => Some feed item
            [link] => http://www.example.com/article34
            [description] => This article is really cool!
            [author] => Aart-Jan Boor
            [pubDate] => Sat, 08 Dec 2007 13:28:11 GMT
        )

    [1] => Array
        (
            [title] => Some feed item2
            [link] => http://www.example.com/article34
            [description] => This article is really cool too!
            [author] => Aart-Jan Boor
            [pubDate] => Sat, 08 Dec 2007 12:57:56 GMT
        )

    [2] => Array
        (
            [title] => Some feed item3
            [link] => http://www.example.com/article4523
            [description] => This article is the best!
            [author] => Aart-Jan Boor
            [pubDate] => Sat, 08 Dec 2007 12:39:42 GMT
        )

)