Fixed bug #26743 (getElementsByTagName doesn't work properly)

ext/dom/dom_iterators.c

@@ -207,6 +207,8 @@ static void php_dom_iterator_move_forward(zend_object_iterator *iter TSRMLS_DC)
 				basenode = dom_object_get_node(objmap->baseobj);
 				if (basenode && (basenode->type == XML_DOCUMENT_NODE || basenode->type == XML_HTML_DOCUMENT_NODE)) {
 					basenode = xmlDocGetRootElement((xmlDoc *) basenode);
+				} else {
+					basenode = basenode->children;
 				}
 				curnode = dom_get_elements_by_tag_name_ns_raw(basenode, objmap->ns, objmap->local, &previndex, iter->index);
 			}
@@ -264,6 +266,8 @@ zend_object_iterator *php_dom_get_iterator(zend_class_entry *ce, zval *object TS
 		} else {
 			if (nodep->type == XML_DOCUMENT_NODE || nodep->type == XML_HTML_DOCUMENT_NODE) {
 				nodep = xmlDocGetRootElement((xmlDoc *) nodep);
+			} else {
+				nodep = nodep->children;
 			}
 			curnode = dom_get_elements_by_tag_name_ns_raw(nodep, objmap->ns, objmap->local, &curindex, 0);
 		}

ext/dom/nodelist.c

@@ -71,6 +71,8 @@ int dom_nodelist_length_read(dom_object *obj, zval **retval TSRMLS_DC)
 			} else {
 				if (nodep->type == XML_DOCUMENT_NODE || nodep->type == XML_HTML_DOCUMENT_NODE) {
 					nodep = xmlDocGetRootElement((xmlDoc *) nodep);
+				} else {
+					nodep = nodep->children;
 				}
 				curnode = dom_get_elements_by_tag_name_ns_raw(nodep, objmap->ns, objmap->local, &count, -1);
 			}
@@ -129,6 +131,8 @@ PHP_FUNCTION(dom_nodelist_item)
 				} else {
 					if (nodep->type == XML_DOCUMENT_NODE || nodep->type == XML_HTML_DOCUMENT_NODE) {
 						nodep = xmlDocGetRootElement((xmlDoc *) nodep);
+					} else {
+						nodep = nodep->children;
 					}
 					itemnode = dom_get_elements_by_tag_name_ns_raw(nodep, objmap->ns, objmap->local, &count, index);
 				}