zitanix on "How To Retrieve An Image Attachment's Alt Text?"

hello

How To Retrieve Thumbnail Image Attachment's Alt Text?

in version 3.4.2 i used this code :

<?php
$thumb_id = get_post_thumbnail_id($post->id);
$alt = get_post_meta($thumb_id, '_wp_attachment_image_alt', true);
if(count($alt)) echo $alt;
?>

but after update to version 3.5 this code not working any more :(