woothemes / woocommerce

	 * @param  boolean $inc_tax Should tax also be included in the subtotal?

	 * @return float

	 */

	public function get_items_subtotal( $inc_tax = true ) {

		$totals = array_values( wp_list_pluck( $this->items, 'subtotal' ) );

		if ( $inc_tax ) {

			$totals = array_merge( $totals, array_values( wp_list_pluck( $this->items, 'subtotal_tax' ) ) );

		}

		return array_sum( $totals );

	}

	/**

	 * Get the total for all items.

	 * @param  boolean $inc_tax Should tax also be included in the subtotal?

	 * @return float

	 */

	public function get_items_total( $inc_tax = true ) {

		$totals = array_values( wp_list_pluck( $this->items, 'total' ) );

		if ( $inc_tax ) {

			$totals = array_merge( $totals, array_values( wp_list_pluck( $this->items, 'tax' ) ) );

		}

		return array_sum( $totals );

	}

	/**

	 * Get the total discount amount.

	 * @param  boolean $inc_tax Should tax also be included in the subtotal?

	 * @return float

	 */

	public function get_fees_total( $inc_tax = true ) {

		$totals = array_values( wp_list_pluck( $this->fees, 'amount' ) );

		if ( $inc_tax ) {

			$totals = array_merge( $totals, array_values( wp_list_pluck( $this->fees, 'tax' ) ) );

		}

		return array_sum( $totals );

	}

	/**

	 * Get all tax rows for a set of items and shipping methods.

	 * @param  boolean $inc_tax Should tax also be included in the subtotal?

	 * @return float

	 */

	public function get_shipping_total( $inc_tax = true ) {

		$totals = array_values( wp_list_pluck( $this->shipping_lines, 'total' ) );

		if ( $inc_tax ) {

			$totals = array_merge( $totals, array_values( wp_list_pluck( $this->shipping_lines, 'total_tax' ) ) );

		}

		return array_sum( $totals );

	}

	/**

	 * Set shipping lines.