title: Big5 conversion to UTF-8 in PHP
body: <p>How do I convert this: 灣
  to \u7063 in PHP?</p>
  
  <p>The reason I'm asking is somehow that chinese character is stored as \u7063 in mysql (utf-8 encoding) but I cannot search it in db when they search with query '灣'.</p>
  
  <p><strong>Additional Information</strong></p>
  
  <p>My DB encoding is UTF-8, with Collation utf8_general_ci. PHP file was saved in UTF-8. I have tried the method suggested by Nambi, but it did not work, it returned ?? in console. See attached image<img src="https://i.stack.imgur.com/libwO.png" alt="enter image description here">.</p>