Description:
------------
At PHP5 we have a nice thing called interface. get_declared_classes() returns an array of all - abstract and non-abstract classes, but the array does not contain my interfaces. If interface is loaded by __autoload just like classes, shouldn't it be loaded into classes register too? Is there any way to check is it interface or what?

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

interface Dao {
function Open();
function Close();
}

echo "<p>class_exists('Dao') says that Dao ";
echo ( class_exists('Dao') ? 'is defined' : 'is not defined' );

$classes = get_declared_classes();
echo "<p>get_declared_classes() says that Dao ";
echo ( in_array('Dao',$classes) ? 'is defined' : 'is not defined' );

?>

Expected result:
----------------
class_exists('Dao') says that Dao is defined

get_declared_classes() says that Dao is not defined

Actual result:
--------------
class_exists('Dao') says that Dao is defined

get_declared_classes() says that Dao is defined