对数组中的所有值求和

Question

I need to sum all the values from my array, so here is an example of it:

Array
(
    [0] => 1
    [1] => 1
    [2] => 1
    [3] => 1
    [4] => 4
    [5] => 6
    [6] => 6
)

looking a way to sum all from same value:

Array
(
    [1] => 4
    [4] => 1
    [6] => 2
)

Any ideas?

Answer 1

RTM: http://www.php.net/array_count_values

ps: assuming that "[5] => 5" is a typo. Otherwise explain more carefully.