<?php

class emailToSms
{
  private $idToAddress = array( 1 => 'messaging.att.net');
  private $myEmail = 'xxxxxx@gmail.com';
  function __contstruct($carrierId)
  {
    $this->to = $idToAdress[$this->scarrierId];
  }
  function sendSms($number, $subject, $message)
  {
    $headers="From: ".$this->myEmail."\r\n";
    $recipient = $number. "@" . $this->to;
    mail($recipient, $subject, $message, $headers);
  }
}

// Usage example
$e= new emailToSms(1);
$e->sendSms("904809843", "YO","Hey!");
?>