Description:
------------
The behavior of the next() function has changed between versions 4 and 5.

Reproduce code:
---------------
<?php
$a = array( "a", "b", "c");
foreach ($a as $aa) {
    print($aa);
    if (next($a))
        print(" + ");
}
?>


Expected result:
----------------
a + b + c

Actual result:
--------------
a + bc