- INIT_ZARR(old_headers, &obj->message->hdrs);
- if (append) {
- array_append(new_headers, &old_headers);
- } else {
- array_merge(new_headers, &old_headers);
- }
+ array_join(Z_ARRVAL_P(new_headers), &obj->message->hdrs, append, ARRAY_JOIN_STRONLY|ARRAY_JOIN_PRETTIFY);