$email = "";

$email = $person[1];

$email .= "@";

$mailserver = array (
     "gmail.com",
     "hotmail.com",
     "maltanet.net",
     "waldonet.net.mt",
     "cis.um.edu.mt",
     "hotmail.co.uk",
     "yahoo.co.uk",
     "mail.com",
     "solutions-lab.net",
     );

$rand_keys = array_rand($mailserver);

echo "ISP : $isp ";

$email .= $isp[$rand_keys[0]];

echo "<br>Email is : $email</br>";