functions.php

function send_sms($smstoken, $sms_recipient, $twilio_sid, $twilio_token, $twilio_phonenumber) {

  error_log("in send_sms function:" . ":" . $smstoken . ":" .$sms_recipient . ":" .$twilio_sid . ":" . $twilio_token . ":" . $twilio_phonenumber);
  error_log("sid " . $twilio_sid . " " . "token " . $twilio_token);

  $client = new Client($twilio_sid, $twilio_token);

  error_log("made it past new Client");
  $result = $client->messages->create(
      $sms_recipient,
      array(
          'from' => $twilio_phonenumber,
          'body' => 'Your password reset token is: ' . $smstoken
      )
  );

  return result;

}

index.php

#==============================================================================
# Includes
#==============================================================================


error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', 1);

require_once("conf/config.inc.php");
require_once("lib/functions.inc.php");
if ($use_recaptcha) {
    require_once("lib/vendor/autoload.php");
}
require_once("twilio-php-master/Twilio/autoload.php");

require_once("lib/detectbrowserlanguage.php");
require_once("lib/vendor/PHPMailer/PHPMailerAutoload.php");


use Twilio\Rest\Client;