WC_Shipping_Legacy_Flat_Rate::calculate_extra_shipping │ public │ WC 1.0

Deprecated since 2.4.0 Additional rates defined like this: Option Name | Additional Cost [+- Percents%] | Per Cost Type (order, class, or item).. It is no longer supported and may be removed in future releases. It is recommended to replace this function with the same one.

Adds extra calculated flat rates.

Method of the class: WC_Shipping_Legacy_Flat_Rate{}

No Hooks.

Returns

null. Nothing (null).

Usage

$WC_Shipping_Legacy_Flat_Rate = new WC_Shipping_Legacy_Flat_Rate();
$WC_Shipping_Legacy_Flat_Rate->calculate_extra_shipping( $method, $rate );
$method(null) (required)
Deprecated.
$rate(array) (required)
Rate information.

Changelog

Deprecated since 2.4.0
Additional rates defined like this:
Option Name | Additional Cost [+- Percents%] | Per Cost Type (order, class, or item).

WC_Shipping_Legacy_Flat_Rate::calculate_extra_shipping() code WC 10.6.2

woocommerce/includes/shipping/legacy-flat-rate/class-wc-shipping-legacy-flat-rate.php 
public function calculate_extra_shipping( $method, $rate ) {
	if ( $this->options ) {
		$options = array_filter( (array) explode( "\n", $this->options ) );

		foreach ( $options as $option ) {
			$this_option = array_map( 'trim', explode( WC_DELIMITER, $option ) );
			if ( count( $this_option ) !== 3 ) {
				continue;
			}
			$extra_rate          = $rate;
			$extra_rate['id']    = $this->id . ':' . urldecode( sanitize_title( $this_option[0] ) );
			$extra_rate['label'] = $this_option[0];
			$extra_cost          = $this->get_extra_cost( $this_option[1], $this_option[2], $rate['package'] );
			if ( is_array( $extra_rate['cost'] ) ) {
				$extra_rate['cost']['order'] = $extra_rate['cost']['order'] + $extra_cost;
			} else {
				$extra_rate['cost'] += $extra_cost;
			}

			$this->add_rate( $extra_rate );
		}
	}
}