Harvest API php no output - php

Question

I'm trying to work off the Harvest php API example from the GitHub page.
Here is the code, but there is no output no matter what I try to do. If I use the Chrome Postman app I can retrieve data. I'm not sure what I'm doing wrong. Confidential information was removed. Any help is much appreciated.
<?php
$url = "https://company.harvestapp.com/?daily=";
$temp = getURL($url);
echo $temp;
function getURL($url) {
$credentials = "<email>:<password>";
$headers = array(
"Content-Type: application/xml",
"Accept: application/xml",
"Authorization-Basic: " . base64_encode($credentials)
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_USERAGENT, "test app site");
$data = curl_exec($ch);
curl_close($ch);
if ($data !=false){
return $data;
}
else
return "no data";
}
?>
This is the error I get from the curl_error function:
HTTP/1.1 401 Unauthorized Server: nginx Date: Fri, 09 May 2014 22:59:27 GMT Content-Type: application/xml; charset=utf-8 Transfer-Encoding: chunked Connection: keep-alive Status: 401 Unauthorized Cache-Control: private, no-store, no-cache, max-age=0, must-revalidate X-Frame-Options: SAMEORIGIN X-Served-From: https://.harvestapp.com/ X-UA-Compatible: IE=Edge,chrome=1 Set-Cookie: _harvest_sess=; domain=.harvestapp.com; path=/; secure; HttpOnly X-Request-Id: e9d6eb74-5c73-430e-9854-ebf6f1c527c8 X-Runtime: 0.019223 You must be authenticated with Harvest to complete this request.