Following script does select from empty table and shouldn't return anything. 

<?PHP
$ = @OCIlogon("test", "tst", "db");
unset($body);
$q = "select * from users";
#table "users" is empty, so no rows should be returned
  $newsQ = OCIparse($newsDB, $q);
  $newsRES = OCIexecute($newsQ);
  OCIfetch($newsQ);
  $body = OCIresult($newsQ, 1);
  if($body) {
 #here php prints garbage 
  print $body;
 }
?>

bash-2.03$ ./php test.php
X-Powered-By: PHP/4.2.3
Content-type: text/html

IC27S   ????bash-2.03$

php compiled with the following options:
--without-mysql
--with-oci8
--with-mcrypt
--with-gd
--enable-track-vars
--with-mod_charset
--enable-discard-path

Oracle server version is 8.1.7.4
Client libraries have version 8.1.7.0