how to decode unicode characters in php

I am trying to pull data from another site and i am getting un开发者_运维知识库icode characters in my result like this

Amazon RDS – The Beginner’s Guide

how can i decode it in php? Can someone help?

Thanks in advance

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Those are not "unicode characters" - Those are artefacts of messed-up character encoding. In this case, the most likely explanation is that you are interpreting utf-8 data as windows-1252. This may happen if you take a utf-8 encoded string and display it in a shell on windows. Or if you display it on a web page, sending a Content-Type header with charset=windows-1252. Just educated guesses of course, there are numerous ways this could happen.

The solution to your problem is to treat the data as utf-8.