diff --git a/ext/xmlreader/php_xmlreader.c b/ext/xmlreader/php_xmlreader.c
--- a/ext/xmlreader/php_xmlreader.c
+++ b/ext/xmlreader/php_xmlreader.c
@@ -304,6 +304,7 @@ static xmlRelaxNGPtr _xmlreader_get_relaxNG(char *source, size_t source_len, siz
 		return NULL;
 	}
 
+	PHP_LIBXML_SANITIZE_GLOBALS(parse);
 	if (error_func || warn_func) {
 		xmlRelaxNGSetParserErrors(parser,
 			(xmlRelaxNGValidityErrorFunc) error_func,
@@ -312,6 +313,7 @@ static xmlRelaxNGPtr _xmlreader_get_relaxNG(char *source, size_t source_len, siz
 	}
 	sptr = xmlRelaxNGParse(parser);
 	xmlRelaxNGFreeParserCtxt(parser);
+	PHP_LIBXML_RESTORE_GLOBALS(parse);
 
 	return sptr;
 }
@@ -881,7 +883,9 @@ PHP_METHOD(xmlreader, open)
 	valid_file = _xmlreader_get_valid_file_path(source, resolved_path, MAXPATHLEN );
 
 	if (valid_file) {
+		PHP_LIBXML_SANITIZE_GLOBALS(reader_for_file);
 		reader = xmlReaderForFile(valid_file, encoding, options);
+		PHP_LIBXML_RESTORE_GLOBALS(reader_for_file);
 	}
 
 	if (reader == NULL) {
@@ -958,7 +962,9 @@ PHP_METHOD(xmlreader, setSchema)
 
 	intern = Z_XMLREADER_P(id);
 	if (intern && intern->ptr) {
+		PHP_LIBXML_SANITIZE_GLOBALS(schema);
 		retval = xmlTextReaderSchemaValidate(intern->ptr, source);
+		PHP_LIBXML_RESTORE_GLOBALS(schema);
 
 		if (retval == 0) {
 			RETURN_TRUE;
@@ -1082,6 +1088,7 @@ PHP_METHOD(xmlreader, XML)
 			}
 			uri = (char *) xmlCanonicPath((const xmlChar *) resolved_path);
 		}
+		PHP_LIBXML_SANITIZE_GLOBALS(text_reader);
 		reader = xmlNewTextReader(inputbfr, uri);
 
 		if (reader != NULL) {
@@ -1100,9 +1107,11 @@ PHP_METHOD(xmlreader, XML)
 					xmlFree(uri);
 				}
 
+				PHP_LIBXML_RESTORE_GLOBALS(text_reader);
 				return;
 			}
 		}
+		PHP_LIBXML_RESTORE_GLOBALS(text_reader);
 	}
 
 	if (uri) {