/home/dd32/public_html/bruce.dd32.id.au/test.php:11:
array (size=3)
  0 => 
    array (size=1)
      0 => int 1
  1 => 
    array (size=1)
      0 => int 2
  2 => 
    array (size=1)
      0 => int 1
a: 
(refcount=2, is_ref=1)
array (size=1)
  0 => (refcount=0, is_ref=0)int 1

/home/dd32/public_html/bruce.dd32.id.au/test.php:12:null

/home/dd32/public_html/bruce.dd32.id.au/test.php:17:
array (size=3)
  0 => 
    array (size=1)
      0 => int 2
  1 => 
    array (size=2)
      0 => int 2
      1 => int 4
  2 => 
    array (size=1)
      0 => int 2
a: 
(refcount=2, is_ref=1)
array (size=1)
  0 => (refcount=0, is_ref=0)int 2

/home/dd32/public_html/bruce.dd32.id.au/test.php:18:null