how to send attachments in emails using AWS SES

I'm trying to send an email programmatically using amazon's SES library using the code from here. After tweaking I have the following pieces of code.

SESUtils.php

<?php

require_once('aws.phar');

use Aws\Ses\SesClient;

/**
 * SESUtils is a tool to make it easier to work with Amazon Simple Email Service
 * Features:
 * A client to prepare emails for use with sending attachments or not
 * 
 * There is no warranty - use this code at your own risk.  
 * @author sbossen 
 * http://ift.tt/1uFRinE
 *
 * Update: Error checking and new params input array provided by Michael Deal
 */
class SESUtils {

const version = "1.0";
const AWS_KEY = SES_KEY;
const AWS_SEC = SES_SECRET;
const AWS_REGION = "us-east-1";
const MAX_ATTACHMENT_NAME_LEN = 60;

/**
 * Usage:
    $params = array(
      "to" => "email1@gmail.com",
      "subject" => "Some subject",
      "message" => "<strong>Some email body</strong>",
      "from" => "sender@verifiedbyaws",
      //OPTIONAL
      "replyTo" => "reply_to@gmail.com",
      //OPTIONAL
      "files" => array(
        1 => array(
           "name" => "filename1", 
          "filepath" => "/path/to/file1.txt", 
          "mime" => "application/octet-stream"
        ),
        2 => array(
           "name" => "filename2", 
          "filepath" => "/path/to/file2.txt", 
          "mime" => "application/octet-stream"
        ),
      )
    );

  $res = SESUtils::sendMail($params);

 * NOTE: When sending a single file, omit the key (ie. the '1 =>') 
 * or use 0 => array(...) - otherwise the file will come out garbled
 * 
 * use $res->success to check if it was successful
 * use $res->message_id to check later with Amazon for further processing
 * use $res->result_text to look for error text if the task was not successful
 * 
 * @param array $params - array of parameters for the email
 * @return \ResultHelper
 */
public static function sendMail($params) {

    $to = self::getParam($params, 'to', true);
    $subject = self::getParam($params, 'subject', true);
    $body = self::getParam($params, 'message', true);
    $from = self::getParam($params, 'from', true);
    $replyTo = self::getParam($params, 'replyTo');
    $files = self::getParam($params, 'files');

    $res = new ResultHelper();

    // get the client ready
    $client = SesClient::factory(array(
        'key' => self::AWS_KEY,
        'secret' => self::AWS_SEC,
        'region' => self::AWS_REGION
    ));

    // build the message
    if (is_array($to)) {
        $to_str = rtrim(implode(',', $to), ',');
    } else {
        $to_str = $to;
    }

    $msg = "To: $to_str\n";
    $msg .= "From: $from\n";

    if ($replyTo) {
        $msg .= "Reply-To: $replyTo\n";
    }

    // in case you have funny characters in the subject
    $subject = mb_encode_mimeheader($subject, 'UTF-8');
    $msg .= "Subject: $subject\n";
    $msg .= "MIME-Version: 1.0\n";
    $msg .= "Content-Type: multipart/alternative;\n";
    $boundary = uniqid("_Part_".time(), true); //random unique string
    $msg .= " boundary=\"$boundary\"\n";
    $msg .= "\n";

    // now the actual message
    $msg .= "--$boundary\n";

    // first, the plain text
    $msg .= "Content-Type: text/plain; charset=utf-8\n";
    $msg .= "Content-Transfer-Encoding: 7bit\n";
    $msg .= "\n";
    $msg .= strip_tags($body);
    $msg .= "\n";

    // now, the html text
    $msg .= "--$boundary\n";
    $msg .= "Content-Type: text/html; charset=utf-8\n";
    $msg .= "Content-Transfer-Encoding: 7bit\n";
    $msg .= "\n";
    $msg .= $body;
    $msg .= "\n";

    // add attachments
    if (is_array($files)) {
        $count = count($files);
        foreach ($files as $idx => $file) {
            if ($idx !== 0)
                $msg .= "\n";
            $msg .= "--$boundary\n";
            $msg .= "Content-Transfer-Encoding: base64\n";
            $clean_filename = mb_substr($file["name"], 0, self::MAX_ATTACHMENT_NAME_LEN);
            $msg .= "Content-Type: {$file['mime']}; name=$clean_filename;\n";
            $msg .= "Content-Disposition: attachment; filename=$clean_filename;\n";
            $msg .= "\n";
            $msg .= base64_encode(file_get_contents($file['filepath']));
            if (($idx + 1) === $count)
                $msg .= "==\n";
            $msg .= "--$boundary";
        }
        // close email
        $msg .= "--\n";
    }

    // now send the email out
    try {
        file_put_contents("log.txt", $msg);
        $ses_result = $client->sendRawEmail(
                array(
            'RawMessage' => array(
                'Data' => base64_encode($msg)
            )
                ), array(
            'Source' => $from,
            'Destinations' => $to_str
                )
        );
        if ($ses_result) {
            $res->message_id = $ses_result->get('MessageId');
        } else {
            $res->success = false;
            $res->result_text = "Amazon SES did not return a MessageId";
        }
    } catch (Exception $e) {
        $res->success = false;
        $res->result_text = $e->getMessage().
                " - To: $to_str, Sender: $from, Subject: $subject";
    }
    return $res;
}

private static function getParam($params, $param, $required = false) {
    $value = isset($params[$param]) ? $params[$param] : null;
    if ($required && empty($value)) {
        throw new Exception('"'.$param.'" parameter is required.');
    } else {
        return $value;
    }
}

}

class ResultHelper {

    public $success = true;
    public $result_text = "";
    public $message_id = "";

}

?>

And the function I'm using to send the actual email

function sendAttachmentEmail($from, $to, $subject, $message, $attachmentPaths=array()){
    client = SesClient::factor(array('key' => SES_KEY, 'secret' => SES_SECRET, 'region' => 'us-east-1'));
    $attachments = array();
    foreach($attachmentPaths as $path){
        $fileName = explode("/",, $path);
        $fileName = $fileName[count($fileName)-1];
        $extension = explode(".", $fileName);
        $extension = strtoupper($extension[count($extension)-1]);
        $mimeType = "";
        if($extension == 'PDF') $mimeType = 'application/pdf';
        elseif($extension == 'CSV') $mimeType = 'test/csv';
        elseif($extension == 'XLS') $mimeType = 'application/vnd.ms-excel';
        array_push($attachments, array("name" => $fileName, "filepath" => $path, "mime" => $mimeType));
    }
    $params = array(
        "from" => $from,
        "to" => $to,
        "subject" => $subject,
        "message" => $message,
        "replyTo" => $from,
        "files" => $attachments
    );
    $res = SESUtils::sendMail($params);
    return $res;
}

sendAttachmentEmail("jesse@aol.com", "jesse@aol.com", 'test', 'test', array("/path/to/file.pdf"));

When I run this the message returned is an error saying "Expected ';', got "Reports" - To: jesse@aol.com, Sender: jesse@aol.com, Subject: test". Anyone know what I might be missing? The contents of the msg being sent is

To: jesse@aol.com
From: jesse@aol.com
Reply-To: jesse@aol.com
Subject: test
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="_Part_142255491754ca7725b0bf89.40746157"

--_Part_142255491754ca7725b0bf89.40746157
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit

test
--_Part_142255491754ca7725b0bf89.40746157
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit

test
--_Part_142255491754ca7725b0bf89.40746157
Content-Transfer-Encoding: base64
Content-Type: application/pdf; name=file.pdf;
Content-Disposition: attachment; filename=file.pdf;