Description:
------------
Only the last var in an if statement with function call is returned as expected. The other types are changed to bool.

Debian Linux 3.1
Server API Apache 2.0 Handler
Default Debian installation
Apache/2.0.54 (Debian GNU/Linux) PHP/4.3.10-16


Reproduce code:
---------------
<?php

function test($string){
  return ($string);
}

if( $a = test("a") && $b = test("b") && $c = test("c") ){
  echo $a;
  echo $b;
  echo $c;
}

?>


Expected result:
----------------
abc

Actual result:
--------------
11c