woocommerce_get_cart_tax │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_get_cart_tax', 'wp_kama_woocommerce_get_cart_tax_filter' );

/**
 * Function for `woocommerce_get_cart_tax` filter-hook.
 * 
 * @param  $wc_price() 
 *
 * @return 
 */
function wp_kama_woocommerce_get_cart_tax_filter( $wc_price() ){

	// filter...
	return $wc_price();
}

$wc_price()

-

Where the hook is called

return apply_filters( 'woocommerce_get_cart_tax', $cart_total_tax ? wc_price( $cart_total_tax ) : '' );

Where the hook is used in WooCommerce