woocommerce_european_union_countries │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_european_union_countries', 'wp_kama_woocommerce_european_union_countries_filter', 10, 2 );

/**
 * Function for `woocommerce_european_union_countries` filter-hook.
 * 
 * @param  $countries 
 * @param  $type      
 *
 * @return 
 */
function wp_kama_woocommerce_european_union_countries_filter( $countries, $type ){

	// filter...
	return $countries;
}

$countries

-

$type

-

Where the hook is called

return apply_filters( 'woocommerce_european_union_countries', $countries, $type );

Where the hook is used in WooCommerce