functions.php

/**
 * Snippet to adjust rates based on package dimension.
 * Created at : 14 Dec 2018
 * PluginHive Plugins : https://www.pluginhive.com/plugins/
 */

add_filter('wf_ups_rate', 'wf_modify_ups_rate', 10, 2);
function wf_modify_ups_rate($xml, $packages){
	if(empty($packages))
	{
		return $xml;
	}
  //Config this array with box dimensions and rate to be added.
  $extra_coast  = array(
			'3,3,0.50' => 10,
      '10,6,8' => 15,
		); 
  $request=explode('</AccessRequest>', $packages);
	$packages = simplexml_load_string(preg_replace('/<\?xml.*\?>/','', $request[1]));
	if($xml){
		foreach ($extra_coast as $extra_coast_dim => $amount_to_add) {
			$dimension_arrey = explode(",",$extra_coast_dim);
			foreach ($packages->Shipment->Package as $i => $package) {
				if(isset($package->Dimensions) && compare_package_dimensions($package->Dimensions, $dimension_arrey) ){
					//if negotiated rate
					if( isset($xml->RatedShipment->NegotiatedRates->NetSummaryCharges->GrandTotal->MonetaryValue) ){
						if( property_exists($xml->RatedShipment->NegotiatedRates->NetSummaryCharges, 'TotalChargesWithTaxes') ){
							$xml->RatedShipment->NegotiatedRates->NetSummaryCharges->TotalChargesWithTaxes->MonetaryValue += $amount_to_add;
						}else{
							$xml->RatedShipment->NegotiatedRates->NetSummaryCharges->GrandTotal->MonetaryValue += $amount_to_add;
						}
					}

					// if normal rate
					$xml->RatedShipment->TotalCharges->MonetaryValue += $amount_to_add;
				}
			}
		}
	}
	return $xml;
}
function compare_package_dimensions($package, $dimension_arrey){
	$i=0;
	foreach ($dimension_arrey as $key => &$value) {
		if( isset($package->Length) && $value == $package->Length  ){
			$i++;
		}elseif( isset($package->Width) && $value == $package->Width  ){
			$i++;
		}elseif( isset($package->Height) && $value == $package->Height  ){
			$i++;
		}
	}
	if( $i==3){
		return true;
	}
	return false;
}