woocommerce_email_order_meta_keys filter-hook . WC 2.3.0

Deprecated woocommerce_email_order_meta_keys filter.

Usage

add_filter( 'woocommerce_email_order_meta_keys', 'filter_function_name_5009', 10, 2 );
function filter_function_name_5009( $array, $sent_to_admin ){
	// filter...

	return $array;
}

$array

-

$sent_to_admin

-

Changelog

Where the hook is called

$_fields = apply_filters( 'woocommerce_email_order_meta_keys', array(), $sent_to_admin );

Where in WP core the hook is used WooCommerce