WordPress at a glance
filter is not described

woocommerce_default_address_fields filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_default_address_fields', 'filter_function_name_1949' );
function filter_function_name_1949( $fields ){
	// filter...

	return $fields;
}
$fields
-

Where the hook is called

WC_Countries::get_default_address_fields()
woocommerce_default_address_fields
woocommerce/includes/class-wc-countries.php 747
$default_address_fields = apply_filters( 'woocommerce_default_address_fields', $fields );

Where in WP core the hook is used WooCommerce

Usage not found.