Add checks to use length/width/height/volume only if they are defined for a...

Add checks to use length/width/height/volume only if they are defined for a product. Default of 0 will be used otherwise

includes/rules_shipping_framework_woocommerce.php

@@ -152,20 +152,27 @@ class RulesShippingFrameworkWooCommerce extends RulesShippingFramework {
 			$w = $product['data']->get_width();
 			$h = $product['data']->get_height();
 
-			$volume = $l * $w * $h;
-			$dimensions['volume'] += $volume * $product['quantity'];
-			$dimensions['maxvolume'] = max ($dimensions['maxvolume'], $volume);
-			$dimensions['minvolume'] = min ($dimensions['minvolume'], $volume);
-				
-			$dimensions['totallength'] += $l * $product['quantity'];
-			$dimensions['maxlength'] = max ($dimensions['maxlength'], $l);
-			$dimensions['minlength'] = min ($dimensions['minlength'], $l);
-			$dimensions['totalwidth'] += $w * $product['quantity'];
-			$dimensions['maxwidth'] = max ($dimensions['maxwidth'], $w);
-			$dimensions['minwidth'] = min ($dimensions['minwidth'], $w);
-			$dimensions['totalheight'] += $h * $product['quantity'];
-			$dimensions['maxheight'] = max ($dimensions['maxheight'], $h);
-			$dimensions['minheight'] = min ($dimensions['minheight'], $h);
+			if (is_numeric($l) && is_numeric($w) && is_numeric($h)) {
+				$volume = $l * $w * $h;
+				$dimensions['volume'] += $volume * $product['quantity'];
+				$dimensions['maxvolume'] = max ($dimensions['maxvolume'], $volume);
+				$dimensions['minvolume'] = min ($dimensions['minvolume'], $volume);
+			}
+			if (is_numeric($l)) {
+				$dimensions['totallength'] += $l * $product['quantity'];
+				$dimensions['maxlength'] = max ($dimensions['maxlength'], $l);
+				$dimensions['minlength'] = min ($dimensions['minlength'], $l);
+			}
+			if (is_numeric($w)) {
+				$dimensions['totalwidth'] += $w * $product['quantity'];
+				$dimensions['maxwidth'] = max ($dimensions['maxwidth'], $w);
+				$dimensions['minwidth'] = min ($dimensions['minwidth'], $w);
+			}
+			if (is_numeric($h)) {
+				$dimensions['totalheight'] += $h * $product['quantity'];
+				$dimensions['maxheight'] = max ($dimensions['maxheight'], $h);
+				$dimensions['minheight'] = min ($dimensions['minheight'], $h);
+			}
 		}
 
 		return $dimensions;

readme.txt

@@ -3,7 +3,7 @@ Contributors: opentools
 Tags: WooCommerce, Shipment, Shipping, Rules shipping
 Requires at least: 4.0
 Tested up to: 4.8
-Stable tag: 2.0.1
+Stable tag: 2.0.2
 License: GPLv3 or later
 License URI: http://www.gnu.org/licenses/gpl.html