code: protected static function highlightString(string $string) : string
      {
          $search  = array("\r\n", "\n\r", "\r", "\n", '<code>', '</code>', '<span style="color: #0000BB">&lt;?php&nbsp;', '#$@r4!/*');
          $replace = array('', '', '', '', '', '', '<span style="color: #0000BB">', '/*');
  
          return str_replace($search, $replace, highlight_string('<?php ' . str_replace('/*', '#$@r4!/*', $string), true));
      }
docs: Highlight string
  
  @param  string $string String
  @return string