Description:
------------
Global variables inside of a method of a class are not initialized

Reproduce code:
---------------
<?
  class test1
  {
     var $my_var;
     function init($str)    { $this->my_var=$str; return $this->my_var; }
  }
  class bug_test
  {
     function set_var($str) { global $info; $info=&new test1(); return $info->init($str); }
     function get_var()     { global $info; return $info->my_var; }
  }
  global $info; 
  $t=&new bug_test();
  $f0=$t->set_var('menu1');
  $f1=$t->get_var();
  $f2=$t->set_var('menu2');
  $f3=$t->get_var();
  echo "f0=$f0\nf1=$f1\nf2=$f2\nf3=$f3\n";  // php-bug! f1<>'menu1' & f3<>'menu2
?>

Expected result:
----------------
f0=menu1
f1=menu1
f2=menu2
f3=menu2

Actual result:
--------------
f0=menu1
f1=
f2=menu2
f3=