How to associate array with different keys and with same values

1 - I need to combine arrays per region and display all the differents fields. If the field repeat just addition because it's some values.

2 - I need to combine array per region and where table = tableFailed if exist or not.

For example :

Array
(
    [0] => Array
        (
            [region] => azerty FCLI
            [totalAttemps] => 4
            [totalSuccess] => 4
            [totalFailed] => 0
            [table] => test_678903_FCLI
        )

    [1] => Array
        (
            [region] => qwerty FCLI
            [totalAttemps] => 1
            [totalSuccess] => 1
            [totalFailed] => 0
            [table] => test_693314_FCLI
        )

    [2] => Array
        (
            [region] => qwertz FCLI
            [totalAttemps] => 1
            [totalSuccess] => 1
            [totalFailed] => 0
            [table] => test_693314_FCLI
        )

    [3] => Array
        (
            [region] => qwertz FCLI
            [totalAttempsFailed] => 11
            [ituCountFailed] => 11
            [tableFailed] => test_693314_FCLI
        )

    [4] => Array
        (
            [region] => azerty FCLI
            [totalAttempsFailed] => 11
            [ituCountFailed] => 11
            [tableFailed] => test_693314_FCLI
        )

    [5] => Array
        (
            [region] => qwerty FCLI
            [totalAttempsFailed] => 11
            [ituCountFailed] => 11
            [tableFailed] => test_693314_FCLI
        )