Google Analytics Daily Upload Script not working - php

Question

I have been working my way through the Hello Analytics Tutorial here - https://developers.google.com/analytics/solutions/articles/hello-analytics-api
and I have been using Ewan Hemings Example here - http://www.ewanheming.com/upload-cost-data-google-analytics to try and upload my external cost data into Google analytics's.
I have been testing the POST data using the API Explorer - https://developers.google.com/apis-explorer/#s/analytics/v3/analytics.management.dailyUploads.upload and the post master app. Although it is not returning any errors the data is not appearing in my Analytics.
I can print the data to the screen and its seems to be formatted correctly so I am a bit stumped. Any help would be apprenticed, even if you could offer a suggestion for debugging.
<?php
// The filename of the performance report
$reportFile = "Bing.csv";
// Hard code the source and medium
$source = "acme ads";
$medium = "cpc";
// Upload file headers
$headers = array(
"ga:source",
"ga:medium",
"ga:campaign",
"ga:adGroup",
"ga:adContent",
"ga:keyword",
"ga:impressions",
"ga:adClicks",
"ga:adCost"
);
$headerRow = implode(",", $headers);
// Create an array to store the data to upload
$uploadFiles = array();
// Open the performance report
$fp = fopen($reportFile, "r");
// Process each row in the file
while ($row = fgetcsv($fp)) {
// Attempt to create a date from the first column of the row
$date = isset($row[0]) ?
date_create_from_format('M d, Y', $row[0]) : null;
// If the date creation was successful, this is a data row
if ($date instanceof DateTime) {
// Extract the columns from the row
$campaign = $row[1];
$adgroup = $row[2];
$headline = $row[3];
$keyword = $row[4];
$impressions = $row[5];
$clicks = $row[6];
$cost = $row[7];
// Don't upload rows with no impressions
if ($impressions > 0) {
// Format the date
$uploadDate = date_format($date, 'Y-m-d');
// If there isn't a file for the upload date, then create one
if (!isset($uploadFiles[$uploadDate])) {
// Add the headers to the file
$uploadFiles[$uploadDate] = "$headerRow\n";
}
// Add the row to the file
$uploadRow = array(
"\"$source\"",
"\"$medium\"",
"\"$campaign\"",
"\"$adgroup\"",
"\"$headline\"",
"\"$keyword\"",
$impressions,
$clicks,
$cost
);
$uploadFiles[$uploadDate] .= implode(",", $uploadRow) . "\n";
}
}
}
fclose($fp);
require_once 'src/Google_Client.php';
require_once 'src/contrib/Google_AnalyticsService.php';
session_start();
$client = new Google_Client();
$client->setApplicationName('Hello Analytics API Sample');
// Visit //code.google.com/apis/console?api=analytics to generate your
// client id, client secret, and to register your redirect uri.
$client->setClientId('69673577u537j57n57j7jjm0.apps.googleusercontent.com');
$client->setClientSecret('67qg6646744724724gK');
$client->setRedirectUri('http://www.mywebsite.co.uk/analytics/GAUpload.php');
$client->setDeveloperKey('AIz42172147246h46h630JuY');
$client->setScopes(array('https://www.googleapis.com/auth/analytics.readonly'));
// Magic. Returns objects from the Analytics Service instead of associative arrays.
$client->setUseObjects(true);
if (isset($_GET['code'])) {
$client->authenticate();
$_SESSION['token'] = $client->getAccessToken();
$redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}
if (isset($_SESSION['token'])) {
$client->setAccessToken($_SESSION['token']);
}
if (!$client->getAccessToken()) {
$authUrl = $client->createAuthUrl();
print "<a class='login' href='$authUrl'>Connect Me!</a>";
} else {
$analytics = new Google_AnalyticsService($client);
foreach (array_keys($uploadFiles) as $uploadDate) {
$analytics->management_dailyUploads->upload('46856856853', 'UA-4276753-1', 'o867567568560XJY4qg', '2013-09-02', 1, 'cost', array("reset" => true, "data" => $uploadFiles[$uploadDate], 'mimeType' => 'application/octet-stream', 'uploadType' => 'media'));
}
}
?>