Description:
------------
When I am using ibase_execute to execute an query i can?t use one of the ibase_fetch_* functions. I always get the same error.

-- php.ini: --
extension=php_interbase.dll

-- Database: --

table: FOOBAR
------
| ID |
------
|  1 |
------

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

    $link = ibase_connect('...', '...', '...');

    $sql = "SELECT * FROM FOOBAR";
    $query = ibase_prepare($sql);
    $result = ibase_execute($query);

    // Variant 1
    $foo = ibase_fetch_assoc($result);

    // Variant 2
    $foo = ibase_fetch_object($result);

    // Variant 3
    $foo = ibase_fetch_row($result);

?>

Expected result:
----------------
Array
(
    [0] => 1
)

Actual result:
--------------
Variant 1:
Warning:  ibase_fetch_assoc(): 5 is not a valid Firebird/InterBase result resource

Variant 2:
Warning:  ibase_fetch_object(): 5 is not a valid Firebird/InterBase result resource in

Variant 3:
Warning:  ibase_fetch_row(): 5 is not a valid Firebird/InterBase result resource