Swapping array values

Mailman

This should be ludicrously easy, but I can't seem to find a function to do this. Lets say I have an array:

(
"blah1" => "poo1",
"blah2" => "poo2",
"blah3" => "poo3"
"blah4" => "poo4"
);

i want to move a given key=>value pair up one slot like so:

(
"blah1" => "poo1",
"blah2" => "poo2",
"blah4" => "poo4"
"blah3" => "poo3"
);

This would be trivial with plain numeric indexes, but with keys it seems rather difficult. I wrote a very complex algorithm to achieve this effect, but it isn't practical and I'd like to know if there is an easier way to do this.

Thanks!

IceD

It's impossible. Really. Assocs are UNSORTED internally. Maybe you can do, what you need, using array_keys function?

Mailman

I was able to acheive this effect by using array_keys and array_values like you said. it basically splits the array into two numerically indexed arrays:

(
0 => "blah1",
1 => "blah2",
2 => "blah3",
3 => "blah4"
)

(
0 => "poo1",
1 => "poo2",
2 => "poo3",
3 => "poo4"
)

It then swaps the specified indexes in each array then recombines them into a new array, then copies that new array over the old array.