PHP Send mail with Amazon AWS SES without extra library

// www.fduran.com
// send mail with Amazon AWS SES without extra library
// needs Pear: apt-get install php-pear 
<?php
function mailSES($to, $subject, $body, $from)
{
        include_once('Mail.php');

	$headers["From"] = $from;
	$headers["To"] = $to;
	$headers["Subject"] = $subject;

	$params["host"] = "ssl://email-smtp.us-east-1.amazonaws.com";
	$params["port"] = "465";
	$params["auth"] = true;
	$params["username"] = "";// NEED USERNAME
	$params["password"] = "";// NEED PASSWORD

	try
	{
            $mail_object =& Mail::factory("smtp", $params);
            $mail_res = $mail_object->send($to, $headers, $body);
	}
	catch (Exception $e)
	{
	    echo("Error sending mail: " . $e->getMessage() . "\n");
	}

	return false;
}

?>