Description:
------------
'global' keyword in a function does not work as expected when an file is included from within a function scope

Reproduce code:
---------------
file b1.php
<?
$a = '1';
doInclude();
function doInclude() {
    require('b2.php'); }
?>

file b2.php
<?
$b = '2';
testGlobalScope();
function testGlobalScope() {
	global $a,$b;
	print("$a\n$b\n");
}
?>

Expected result:
----------------
1
2

Actual result:
--------------
1