WordPress at a glance
filter is not described

load_image_to_edit_attachmenturl filter-hook . WP 3.1.0

Filters the image URL if not in the local filesystem.

The filter is only evaluated if fopen is enabled on the server.

Usage

add_filter( 'load_image_to_edit_attachmenturl', 'filter_function_name_9069', 10, 3 );
function filter_function_name_9069( $image_url, $attachment_id, $size ){
	// filter...

	return $image_url;
}
$image_url(string)
Current image URL.
$attachment_id(string)
Attachment ID.
$size(string)
Size of the image.

Where the hook is called

_load_image_to_edit_path()
wp-admin/includes/image.php 659
$filepath = apply_filters( 'load_image_to_edit_attachmenturl', wp_get_attachment_url( $attachment_id ), $attachment_id, $size );

Where the hook is used (in WP core)

Does not used.