'Way to count a php array with key separation [closed]

I could need some help from the experts here :)

I do have an php array:

Array ( [A] => 5 [B] => 1 [A,B] => 5 )

For statistics i need to summ the value for each keyword. So I would need an output like this:

Array ( [A] => 10 [B] => 6 )

Someone an idea? Any help is much appreciated :)

php arrays sum keyword

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Solution	Source