Post Gallery list attachments except the one used as post thumbnail

Question

I'm doing gallery in a single post after the post thumbnail. So I list all the post attachment with the image type (with the following query) but I want to exclude the post thumbnail.

global $post;
$args = array(
    'post_type' => 'attachment',
    'post_mime_type' => 'image',
    'numberposts' => -1,
    'orderby' => 'menu_order',
    'order' => 'ASC',
    'post_parent' => $post->ID
);
$images = get_posts($args);

My first idea was to compare the thumbnail full size url with each attachment src.

$large_image_url = "";
if ( has_post_thumbnail() ):
    $large_image_url = wp_get_attachment_image_src( get_post_thumbnail_id(), 'full');
    $large_image_url = parse_url($large_image_url[0], PHP_URL_PATH);
/* 
 *  [...] 
 */
global $post;
$args = array(
    'post_type' => 'attachment',
    'post_mime_type' => 'image',
    'numberposts' => -1,
    'orderby' => 'menu_order',
    'order' => 'ASC',
    'post_parent' => $post->ID
);
$images = get_posts($args);
foreach($images as $image){
    $big_array = image_downsize( $image->ID, 'full' );
    $img_url = $big_array[0];
    if(!empty($large_image_url) && $large_image_url == $img_url){
    continue;
    }
    array_push($gallery, array(
            'dirname' => dirname($img_url),
            'filepath' => parse_url($img_url, PHP_URL_PATH),
            'ID' => $image->ID
        ));
}

But actually it doesn't work yet. Does someone know a simpler or neater way to do so ? Thanks

Answer 1

You can use the exclude parameter.

global $post;
$args = array(
    'exclude' => get_post_thumbnail_id( $post->ID )
    'post_type' => 'attachment',
    'post_mime_type' => 'image',
    'numberposts' => -1,
    'orderby' => 'menu_order',
    'order' => 'ASC',
    'post_parent' => $post->ID
);
$images = get_posts($args);

http://codex.wordpress.org/Template_Tags/get_posts
http://codex.wordpress.org/Function_Reference/get_post_thumbnail_id