Description:
------------
In http://www.php.net/pg_set_client_encoding first example uses UNICODE constant instead of string. Such call causes "Use of undefined constant UNICODE - assumed 'UNICODE' in ..." notice.

Reproduce code:
---------------
$conn = pg_connect("dbname=publisher");
if (!$conn) {
  die("An error occured.\n");
}
pg_set_client_encoding($conn, UNICODE);
pg_close($conn);

Expected result:
----------------
No output in PHP error_reporting=E_ALL environment

Actual result:
--------------
E_NOTICE