$from = array(
  'name' => 'From Name',
  'email' => 'from@gmail.com',
  'password' => 'password'
);

$to = array(
  'name' => 'To name',
  'email' => 'to@email.com'
);

$mail = new PHPMailer;

$mail->isHTML(true);

$mail->isSMTP();

$mail->SMTPDebug = 0;

$mail->Host = 'tls://smtp.gmail.com:587';

$mail->SMTPAuth = true;

$mail->Username = $from['email'];

$mail->Password = $from['password'];

$mail->setFrom($from['email'], $from['name']);

$mail->addReplyTo($from['email'], $from['name']);

$mail->addAddress($to['email'], $to['name']);

$mail->Subject = $subject;

$mail->Body = $message;

$mail->send();