static function highlight ($code)
  {
    $o = highlight_string ("<?php;$code ?>", true);
    $o = str_extract ($o, '%php</span>.*?</span>(.*)<span[^>]*>\?&gt;%s');
    return $o !== '' ? $o : $code;
  }
static function highlight ($code)
  {
    $o = highlight_string ("<?php;$code ?>", true);
    $o = str_extract ($o, '%php</span>.*?</span>(.*)<span[^>]*>\?&gt;%s');
    return $o !== '' ? $o : $code;
  }
static function highlight ( $ code ) { $ o = highlight_string ( "<?php;$code ?>" , true ) ; $ o = str_extract ( $ o , '%php</span>.*?</span>(.*)<span[^>]*>\?&gt;%s' ) ; return $ o !== '' ? $ o : $ code ; }
Highlights syntax on a string of PHP source code.

@param string $code The raw PHP code.
@return string HTML formatted source code.
Highlights syntax on a string of PHP source code .