WordPress at a glance
action is not described

delete_postmeta action-hook . WP 2.9.0

Fires immediately before deleting metadata for a post.

Usage

add_action( 'delete_postmeta', 'action_function_name_1831' );
function action_function_name_1831( $meta_ids ){
	// action...
}
$meta_ids(string[])
An array of metadata entry IDs to delete.

Changelog

Since 2.9.0 Introduced.

Where the hook is called

delete_metadata()
delete_postmeta
wp-includes/meta.php 426
do_action( 'delete_postmeta', $meta_ids );

Where in WP core the hook is used

Usage not found!