Snippets → WordPress

<?php
$attachments = get_children(array('post_parent' => $post->ID,
						'post_status' => 'inherit',
						'post_type' => 'attachment',
						'post_mime_type' => 'image',
						'order' => 'ASC',
						'orderby' => 'menu_order ID'));

foreach($attachments as $att_id => $attachment) {
	$full_img_url = wp_get_attachment_url($attachment->ID);
        $split_pos = strpos($full_img_url, 'wp-content');
        $split_len = (strlen($full_img_url) - $split_pos);
        $abs_img_url = substr($full_img_url, $split_pos, $split_len);
        $full_info = @getimagesize(ABSPATH.$abs_img_url);
        ?>
        <div class="WallSizesHolder">
		<div class="WallSizesThumbHolder">
			<a href="<?php echo $full_img_url; ?>" title="<?php echo $attachment->post_title; ?>" target="_blank"><img src="<?php bloginfo('stylesheet_directory'); ?>/thumb.php?src=<?php echo $full_img_url; ?>&w=92&h=69&zc=1" /></a>
		</div>
		<p><?php echo $full_info[0].'x'.$full_info[1]; ?></p>
	</div>
<?php
}
?>

Source: http://return-true.com/2010/02/display-all-images-attached-t...