유니코드 변환(decode)

# unicode decode
function utf8_urldecode($str) {
    $str = preg_replace("/%u([0-9a-f]{3,4})/i","&#x\\1;",urldecode($str));
    return html_entity_decode($str,null,'UTF-8');;
  }
  
 # use
$str = utf8_urldecode($str);

 

참고 : https://www.php.net/manual/en/function.urldecode.php