WordPress at a glance
filter is not described

woocommerce_sort_countries filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_sort_countries', 'filter_function_name_4657' );
function filter_function_name_4657( $true ){
	// filter...

	return $true;
}
$true
-

Where the hook is called

WC_Countries::get_countries()
woocommerce_sort_countries
woocommerce/includes/class-wc-countries.php 52
if ( apply_filters( 'woocommerce_sort_countries', true ) ) {

Where in WP core the hook is used WooCommerce

Usage not found.