What is the correct way to encode status on status update post?

[arturslataks]

I was wondering what is the correct way to encode tweets before sending them to twitter? I am using PHP and I’ve tried multiple ways…
Here they are :

1. just utf8_encode
2. just urlencode
3. just rawurlencode
4. utf8_encode + rawurlencode
5. utf8_encode + urlencode

And when I try to post " ’ " I always end up with something like this " ’ "