NEW PHP 7.1 compatibility

htdocs/core/class/commonobject.class.php

@@ -3017,9 +3017,16 @@ abstract class CommonObject
 
         foreach ($this->lines as $line)
         {
-
-            $totalOrdered+=$line->qty_asked;    // defined for shipment only
-            $totalToShip+=$line->qty_shipped;   // defined for shipment only
+            if (isset($line->qty_asked))   
+            {
+                if (empty($totalOrdered)) $totalOrdered=0;  // Avoid warning because $totalOrdered is ''
+                $totalOrdered+=$line->qty_asked;    // defined for shipment only
+            }
+            if (isset($line->qty_shipped)) 
+            {
+                if (empty($totalToShip)) $totalToShip=0;    // Avoid warning because $totalToShip is ''
+                $totalToShip+=$line->qty_shipped;   // defined for shipment only
+            }
 
             // Define qty, weight, volume, weight_units, volume_units
             if ($this->element == 'shipping') $qty=$line->qty_shipped;     // for shipments
@@ -3034,8 +3041,11 @@ abstract class CommonObject
             if (! empty($weight_units)) $weightUnit = $weight_units;
             if (! empty($volume_units)) $volumeUnit = $volume_units;
 
+            if (empty($totalWeight)) $totalWeight=0;  // Avoid warning because $totalWeight is ''
+            if (empty($totalVolume)) $totalVolume=0;  // Avoid warning because $totalVolume is ''
+            
             //var_dump($line->volume_units);
-            if ($weight_units < 50)   // >50 means a standard unit (power of 10 of official unit) > 50 means an exotic unit (like inch)
+            if ($weight_units < 50)   // >50 means a standard unit (power of 10 of official unit), > 50 means an exotic unit (like inch)
             {
                 $trueWeightUnit=pow(10, $weightUnit);
                 $totalWeight += $weight * $qty * $trueWeightUnit;
@@ -3044,7 +3054,7 @@ abstract class CommonObject
             {
                 $totalWeight += $weight * $qty;   // This may be wrong if we mix different units
             }
-            if ($volume_units < 50)   // >50 means a standard unit (power of 10 of official unit) > 50 means an exotic unit (like inch)
+            if ($volume_units < 50)   // >50 means a standard unit (power of 10 of official unit), > 50 means an exotic unit (like inch)
             {
                 //print $line->volume."x".$line->volume_units."x".($line->volume_units < 50)."x".$volumeUnit;
                 $trueVolumeUnit=pow(10, $volumeUnit);