woocommerce_checkout_get_value filter-hook . WC 1.0

Allow 3rd parties to short circuit the logic and return their own default value.

Usage

add_filter( 'woocommerce_checkout_get_value', 'filter_function_name_5778', 10, 2 );
function filter_function_name_5778( $null, $input ){
	// filter...

	return $null;
}

$null

-

$input

-

Where the hook is called

$value = apply_filters( 'woocommerce_checkout_get_value', null, $input );

Where in WP core the hook is used WooCommerce