WordPress at a glance
filter is not described

default_checkout_(input) filter-hook . WC 1.0

Usage

add_filter( 'default_checkout_(input)', 'filter_function_name_6419', 10, 2 );
function filter_function_name_6419( $value, $input ){
	// filter...

	return $value;
}
$value
-
$input
-

Where the hook is called

WC_Checkout::get_value()
default_checkout_(input)
woocommerce/includes/class-wc-checkout.php 1261
return apply_filters( 'default_checkout_' . $input, $value, $input );

Where in WP core the hook is used WooCommerce

Usage not found.