APP: Add utils to index.php
APP: Add utils to index.php

Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano,Canaan-Creative/Avalon-nano