Description:
------------
---
From manual page: http://www.php.net/splfixedarray.setsize
---

When resizing an SplFixedArray using the setSize method, values from the deleted 
indexes behave strangely.


Test script:
---------------
The following piece of code:

<?php
$fa = new SplFixedArray(2);
$fa[0] = 'Hello';
$fa[1] = 'World';
$fa->setSize(3);
var_dump($fa);
$fa[2] = '!';
$fa->setSize(1);
var_dump($fa);
?>

Outputs: 

object(SplFixedArray)#1 (3) {
  [0]=>
  string(5) "Hello"
  [1]=>
  string(5) "World"
  [2]=>
  NULL
}
object(SplFixedArray)#1 (3) {
  [0]=>
  string(5) "Hello"
  [1]=>
  string(5) "World"
  [2]=>
  NULL
}

While the following piece of code:

<?php
$fa = new SplFixedArray(2);
$fa[0] = 'Hello';
$fa[1] = 'World';
$fa->setSize(3);
$fa[2] = '!';
var_dump($fa);
$fa->setSize(1);
var_dump($fa);
?>

Outputs this:

object(SplFixedArray)#1 (3) {
  [0]=>
  string(5) "Hello"
  [1]=>
  string(5) "World"
  [2]=>
  string(1) "!"
}
object(SplFixedArray)#1 (3) {
  [0]=>
  string(5) "Hello"
  [1]=>
  string(5) "World"
  [2]=>
  string(1) "!"
}

Expected result:
----------------
I would expect to see the same in either of the above presented cases, and it 
should be an array with the new size that was specified using setSize:

object(SplFixedArray)#1 (1) {
  [0]=>
  string(5) "Hello"
}