Description:
------------
The constant isn't translated when alone.  It's translated only when part of an arithmetic expression, or when passed to intval().

This bug appears on two different boxes, both running w2ksp4.  One box is running 4.4.7 (the bug has persisted across upgrades since 4.2), the other 5.2.5.


Reproduce code:
---------------
<?php
  echo false ;
  echo (false) ;
  echo false+false ; 
  echo intval(false) ;
  echo '"'.false.'"' ;
?>

Expected result:
----------------
0000"0"

Actual result:
--------------
00""