PHP can i access array key with variable variables?

i have an array with some info but i am trying to implement a way to access array dynamically with variable variables but i have no idea how, because php interprets that the whole string is a variable and not a variable with an associative key.

my example code:

$myArrayWithData = ["info" => 1];
$myvarvarArray = "myArrayWithData['info']";
print_r($$myvarvarArray);

expected behavior:

1

Actual Behavior:

`"Notice: Undefined variable: myArrayWithData['info']"`

i don want to hardcode indexes because i am trying to create a twig function that creates the array index path by a string and i am not able to predict the array Keys.

$myvarvarArray = "myArrayWithData"
print_r($$myvarvarArray["info"]); #hardcoded index

edit: my function can add more than 1 index

/**
     * add a value to your twig array instead of using merge
     *
     * @param $object  Array or object(public access) to set a new value
     * @param string $context object complete path where value will be setted example "children.grandchildren.info"
     * @param $value value to be inserted
     * 
     */ 
    public function enhancedMerge($object, $contexts, $value){
        $contexts = explode('.', $contexts);
        $newObject = $object;
        $path = '';

        foreach($contexts as $key => $context){
            $objectWithPath = 'newObject' . $path;
            $contextIsArray = is_array(${$objectWithPath}) ? true : false;
            if($contextIsArray){
                $path .= "['" . $context . "']";
            }else{
                $path .= "->" . $context;
            }
        }
        $objectWithPath = $newObject . $path;
        $$objectWithPath = $value;

        return $$newObject;
    }

Can I access array key with variable variables?

Short answer: No.

However, we can access them using reference variables like this answer.

My function now adds values to array twigs

public function enhancedMerge($object, $contexts, $value)
{
    $contexts = explode('.', $contexts);
    $elemCount = count($contexts); 

    $current = &$object;
    foreach ($contexts as $key => $context) {
        if (is_array($current)) {
            $current =  &$current[$context];
        } elseif ($key != $elemCount-1) {
            $current =  &$current->$context;
        }
    }

    $backup = $current;
    $current = $value; #set new value and modify $object by reference 

    return $object;
}