title: PHP \uXXXX encoded string convert to utf-8
body: <p>I've got such strings </p>
  
  <pre><code>\u041d\u0418\u041a\u041e\u041b\u0410\u0415\u0412
  </code></pre>
  
  <p>How can I convert this to utf-8 encoding?
  And what is the encoding of given string?
  Thank you for participating!</p>