Leggere array associativo e cambiare valore

[Santino83_02]

$ids= array(
    array("id" => "CD0001",
        'children' => array(
            array('id' => 'pi0012', 'children' => array(array('id' => 'pi0010')))
        )
    ),
    array("id" => "FC0128"),
    array("id" => "GS9998",'children' =>
        array(
            array('id' => 'ee0001')
        )
    ));
$increment = 0;

function modificaID(&$array,&$increment){

    foreach($array as &$element){
        
        $element['id'] = $element['id'].++$increment;
        if(array_key_exists('children',$element) && $element['children'])
            modificaID($element['children'],$increment);
    }
    
}

modificaID($ids,$increment);

print_r($ids);