How to change elements of a SplDoublyLinkedList
<?php
function change_elements($list,$old_index,$new_index){
$tmp1=$list->offsetGet($old_index);
$tmp2=$list->offsetGet($new_index);
$list->offsetSet($old_index,$tmp2);
$list->offsetSet($new_index,$tmp1);
}
$list=new SplDoublyLinkedList();
$list->push("A");
$list->push("B");
$list->push("C");
/*
OUTPUT
A
B
C
*/
change_elements($list,0,1);
/*
OUTPUT
B
A
C
*/
?>