String to utf 8 php

- Php encode string to utf 8
- Str_split utf 8 php
- Php format string to utf 8
- Php force string to utf 8
- Php string to lowercase utf 8
- Php string to bytes utf 8
- Php string to upper utf 8
- Php convert string ascii to utf 8
- Php convert string charset to utf 8
- Php convert string ansi to utf 8
- Php change string encoding to utf 8
- Php write string to file utf 8