Deprecated key() and next() error on php 8.1.1

Hello Avid, congrats on releasing version 3, i was testing it and found one error and one thing..

1. Obfuscated file is very large than 2.8 version, in version 2.8 it really compress the file to lower size then original but in version 3 its making it more than 3 times of its actual size. 
2. Deprecated Error :  on  key() and next() error on calling on an object
