How can I convert Unicode to utf8?

Question

I have a database full of Unicode strings and now I need a function to convert and show them.

This is my current string:

\u062f\u0648\u0646\u0647 \u0645\u0646\u2665\u2665\u2665\u2665

And this is expected output:

دونه من♥️♥️♥️♥️

Answer 1

preg_replace_callback('/\\\\u([0-9a-fA-F]{4})/',
function ($match) {
      return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE');
        }, '\u062f\u0648\u0646\u0647 \u0645\u0646\u2665\u2665\u2665\u2665');

Online Demo