fixes

Author: ndossche

ext/dom/obj_map.c

@@ -344,18 +344,22 @@ static void dom_map_get_by_class_name_item(dom_nnodemap_object *map, zend_long i
 	xmlNodePtr nodep = dom_object_get_node(map->baseobj);
 	xmlNodePtr itemnode = NULL;
 	if (nodep && index >= 0) {
-		xmlNodePtr basep = nodep;
 		dom_node_idx_pair start_point = dom_obj_map_get_start_point(map, nodep, index);
 		if (start_point.node) {
-			itemnode = php_dom_next_in_tree_order(start_point.node, basep);
+			if (start_point.index > 0) {
+				/* Only start iteration at next point if we actually have an index to seek to. */
+				itemnode = php_dom_next_in_tree_order(start_point.node, nodep);
+			} else {
+				itemnode = start_point.node;
+			}
 		} else {
 			itemnode = php_dom_first_child_of_container_node(nodep);
 		}
 
 		do {
 			--start_point.index;
 			while (itemnode != NULL && !dom_matches_class_name(map, itemnode)) {
-				itemnode = php_dom_next_in_tree_order(itemnode, basep);
+				itemnode = php_dom_next_in_tree_order(itemnode, nodep);
 			}
 		} while (start_point.index > 0 && itemnode);
 	}

ext/dom/tests/modern/common/Element_getElementsByClassName.phpt

@@ -21,7 +21,7 @@ foreach ($collection as $node) {
 var_dump($dom->getElementsByClassName(" ")->count());
 var_dump($dom->getElementsByClassName("\t")->count());
 var_dump($dom->getElementsByClassName("\t\n\f\v")->count());
-var_dump($dom->getElementsByClassName("\t\n\f\v")->namedItem("cjild"));
+var_dump($dom->getElementsByClassName("\t\n\f\v")->namedItem("child"));
 
 ?>
 --EXPECT--