Description:
------------
once an array is referenced elsewhere, it seems that KEY and CURRENT do not work as expected.

I'm not sure of the version on the webhost I'm using,

Reproduce code:
---------------
$arr = array('0', '1', '2', '3');

reset($arr);

print('Direct ');
print('NEXT: '.next($arr).' ');
print('NEXT: '.next($ref).' ');
print('NEXT: '.next($ref).' ');
print('KEY: '.key($arr).' ');
print('CURRENT: '.current($arr).' ');
print("<br><br>\n");

$ref =& $arr;
reset($arr);

print('Direct ');
print('NEXT: '.next($arr).' ');
print('NEXT: '.next($ref).' ');
print('NEXT: '.next($ref).' ');
print('KEY: '.key($arr).' ');
print('CURRENT: '.current($arr).' ');
print("<br><br>\n");

reset($ref);

print('Referended ');
print('NEXT: '.next($ref).' ');
print('NEXT: '.next($ref).' ');
print('NEXT: '.next($ref).' ');
print('KEY: '.key($ref).' ');
print('CURRENT: '.current($ref).' ');
print("<br><br>\n");


Expected result:
----------------
Direct NEXT: 1 NEXT: 2 NEXT: 3 KEY: 3 CURRENT: 3 

Direct NEXT: 1 NEXT: 2 NEXT: 3 KEY: 3 CURRENT: 3 

Referended NEXT: 1 NEXT: 2 NEXT: 3 KEY: 3 CURRENT: 3 

Actual result:
--------------
Direct NEXT: 1 NEXT: 2 NEXT: 3 KEY: 3 CURRENT: 3 

Direct NEXT: 1 NEXT: 2 NEXT: 3 KEY: 0 CURRENT: 0 

Referended NEXT: 1 NEXT: 2 NEXT: 3 KEY: 0 CURRENT: 0