Asterisk extracting email address from vocemail.conf file

Extracting the email address for device 100

<?php
if(!empty($argv[1])){
 $email=shell_exec("cat /etc/asterisk/voicemail.conf | grep $argv[1]  ");
    stristr($email, '@'); // As of PHP 5.3.0, outputs US

  $username=stristr($email, '@',true);
$id=explode(',',$email);
echo $id[2];
 echo "\n";
$domain=explode(',',$username);
echo $domain[2]; }

else {

echo "FALSE";
}
?>
 php  vm_email.php 100