WordPress at Your Fingertips
filter is not described

woocommerce_validate_postcode filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_validate_postcode', 'filter_function_name_4935', 10, 3 );
function filter_function_name_4935( $valid, $postcode, $country ){
	// filter...

	return $valid;
}
$valid
-
$postcode
-
$country
-

Where the hook is called

WC_Validation::is_postcode()
woocommerce_validate_postcode
woocommerce/includes/class-wc-validation.php 123
return apply_filters( 'woocommerce_validate_postcode', $valid, $postcode, $country );

Where in WP core the hook is used WooCommerce

Usage not found.