ARENAM

	public static function maskEmail($email) {
		$mail_parts   = explode("@", $email);
		$domain_parts = explode('.', $mail_parts[1]);

		$mail_parts[0]   = self::mask($mail_parts[0], 1, 1);
		$domain_parts[0] = self::mask($domain_parts[0], 1, 1);
		$mail_parts[1]   = implode('.', $domain_parts);
		$masked          = implode("@", $mail_parts);
		return $masked;
	}
	private static function mask($str, $first, $last) {
		$len = strlen($str);
		$toShow = $first + $last;
		return substr($str, 0, $len <= $toShow ? 0 : $first).str_repeat("*", $len - ($len <= $toShow ? 0 : $toShow)).substr($str, $len - $last, $len <= $toShow ? 0 : $last);
	}