Can yo help me to build this?

Unless you really have to use your own code I really suggest for you to use something like PHPMailer (a href="http://phpmailer.codeworxtech.com/)." rel="nofollow"http://phpmailer.codeworxtech.com/)./a It's a time saver, but if this is not your case, then your best shot is to zip the files with PHP Zip library and attach the zip.