I am using the Manual Image Crop plugin to set thumbnails for images. I am not using any images as 'featured images' however.
I have a number of thumbnails saved to each image. If I use
wp_get_attachment_link(id, 'medium'); then I get the desired 'medium' thumbnail returned but as whole html block output, including '' tags, size etc etc.
I just want the URL of this specific thumbnail (or the img tags 'src' attribute). Is there a built in wordpress function for this or will I have to use PHP regex or something?