code: public function makeEmojiAccessible($text)
      {
          return preg_replace_callback(
              $this->search,
              function ($matches) {
                  $desc = $this->emoji[$this->utf8ToUnicode($matches[0])];
                  return sprintf($this->output, $desc, $matches[0]);
              },
              $text
          );
      }
docs: Given an input string, find any emoji characters, and add a wrapping span
  tag that includes the emoji description in an accessible manner.
  
  @param  string $text
  @return string