Description:
------------
One script but two value from getcwd()

Reproduce code:
---------------
Note that both script are placed in dir:
C:\Apache2\htdocs\script

// index1.php (script with bug):
<?
 function a($i){
  $i.='func getcwd(): '.getcwd();
  return($i);
 }
 ob_start('a');
 print('main getcwd(): '.getcwd().'<br>');
?>

// index2.php (to clarificate):
<?
 function a($i){
  print('func getcwd(): '.getcwd());
  return($i);
 }

 print('main getcwd(): '.getcwd().'<br>');

 $a=array('');
 $a=array_map('a',$a);
?>

Expected result:
----------------
// index1.php return:
main getcwd(): C:\Apache2\htdocs\script
func getcwd(): C:\Apache2\htdocs\script

// index2.php return:
main getcwd(): C:\Apache2\htdocs\script
func getcwd(): C:\Apache2\htdocs\script

Actual result:
--------------
// index1.php return:
main getcwd(): C:\Apache2\htdocs\script
func getcwd(): C:\Apache2

// index2.php return:
main getcwd(): C:\Apache2\htdocs\script
func getcwd(): C:\Apache2\htdocs\script