1 files changed, 8 insertions, 1 deletions
diff --git a/Zend/zend_API.c b/Zend/zend_API.c
index 7352bea999..0228b9ee78 100644
--- a/Zend/zend_API.c
+++ b/Zend/zend_API.c
@@ -316,8 +316,15 @@ static char *zend_parse_arg_impl(zval **arg, va_list *va, char **spec TSRMLS_DC)
 						*pl = Z_STRLEN_PP(arg);
 						break;
 
+					case IS_OBJECT: {
+						if (Z_OBJ_HANDLER_PP(arg, cast_object) && Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, *arg, IS_STRING, 0 TSRMLS_CC) == SUCCESS) {
+							*pl = Z_STRLEN_PP(arg);
+							*p = Z_STRVAL_PP(arg);
+							break;
+						}
+					}
+						
 					case IS_ARRAY:
-					case IS_OBJECT:
 					case IS_RESOURCE:
 					default:
 						return "string";