我的代码是这样的:$value){$masterLookup=newMaster_lookup;$masterLookup->id=++$key$masterLookup->parent_id=NULL;$masterLookup->code=$value->kdakun;$masterLookup->name=$value->nmakun;$masterLookup->type='akun';$masterLookup->information=json_encode($value->kdjenbel);$masterLookup->save();}}}我用索引$key来反击但是执行