php extract() associative array when a function is called - php

Question

I have this function:
function extractAvailable($assoc1, $assoc2){
if($assoc1) extract($assoc1);
else extract($assoc2);
}
What I expect is to call this function later in the global scope, and have my variables available, like so:
$arr1 = [];
$arr2 = ['one'=>1, 'two'=>'SecondItem'];
extractAvailable($arr1, $arr2);
With the call on extractAvailable(), I need to have the varialbes $one and $two available in the current scope. Obviously, I've got something wrongly figured concerning variable scope use here, 'cause it isn't working. When I try to use the variable, what I get instead is Notice: Undefined variable: one.
How do I get this to work?

Answer 1

You could add the new data to the $GLOBALS array which would have the effect of making them available in other scopes.
function extractAvailable($assoc1, $assoc2){
if($assoc1) {
foreach ($assoc1 as $key => $value) {
$GLOBALS[$key] = $value;
}
} else {
foreach ($assoc2 as $key => $value) {
$GLOBALS[$key] = $value;
}
}
}
But I have to wonder why you need to extract anything from a perfectly good array and place the exact same data into scalar variables.
All this does is double your memory requirement for no benefit whatsoever

Answer 2

If you want them to be available in the global scope, you can use variable variables instead of extract, and specify them as global.
function extractAvailable($assoc1, $assoc2){
if($assoc1) {
foreach ($assoc1 as $key => $value) {
global $$key;
$$key = $value;
}
} else {
foreach ($assoc2 as $key => $value) {
global $$key;
$$key = $value;
}
}
}