Collective\Html\HtmlBuilder::obfuscate PHP Method

    public function obfuscate($value)
    {
        $safe = '';
        foreach (str_split($value) as $letter) {
            if (ord($letter) > 128) {
                return $letter;
            }
            // To properly obfuscate the value, we will randomly convert each letter to
            // its entity or hexadecimal representation, keeping a bot from sniffing
            // the randomly obfuscated letters out of the string on the responses.
            switch (rand(1, 3)) {
                case 1:
                    $safe .= '&#' . ord($letter) . ';';
                    break;
                case 2:
                    $safe .= '&#x' . dechex(ord($letter)) . ';';
                    break;
                case 3:
                    $safe .= $letter;
            }
        }
        return $safe;
    }

 /**
  * Return the obfuscated email.
  *
  * @return null|string
  */
 public function obfuscated()
 {
     if (!($email = $this->object->getValue())) {
         return null;
     }
     return $this->html->obfuscate($email);
 }