Get error rate from new relic and send to LittleBits CloudBit PHP

relicErrors.php

<?php
date_default_timezone_set('Asia/Jerusalem');

echo "New Relic + Little Bits<br>";

$appId = YOUR-NEWRELIC-APP-ID;
$timePicker = 30; //get last 30 minutes error rate from newrelic
$relicKey = 'YOUR-RELIC-JEY';
$deviceId = 'YOUR-CLOUD-BIT-DEVICE-ID'; 
$cloudBitKey = 'YOUR-CLOUD-BIT-KEY';
$errorURL = 'Errors/all&values[]=error_count';
$countURL = 'HttpDispatcher&values[]=call_count';
$otherTransactionsURL = 'OtherTransaction/all&values[]=call_count';
$errorKey = 'error_count';
$countKey = 'call_count';
$valueType = 'percent'; 

$nowMinus30 = strtotime("-$timePicker minutes");
$startTimeDate = date('Y-m-d', $nowMinus30);
$startTimeMinutes = date('h:i:s', $nowMinus30);
$startTimeStr = "{$startTimeDate}T{$startTimeMinutes}+02:00";

$now = time();
$endTimeDate = date('Y-m-d', $now);
$endTimeMinutes = date('h:i:s', $now);
$endTimeStr = "{$endTimeDate}T{$endTimeMinutes}+02:00";

$errorCount = getMetricFromRelic($errorURL, $appId, $errorKey, $startTimeStr, $endTimeStr);
$callCount = getMetricFromRelic($countURL, $appId, $countKey, $startTimeStr, $endTimeStr);
$otherTransactionsCount = getMetricFromRelic($otherTransactionsURL, $appId, $countKey, $startTimeStr, $endTimeStr);

echo "Error Count: $errorCount<br>";
echo "Call Count: $callCount<br>";
$errorRate = 100 * $errorCount / ($callCount + $otherTransactionsCount);
echo "The eror rate is : $errorRate<br>";

sendToCloudBit($cloudBitKey, $deviceId, 60000, $valueType, $errorRate);

function getMetricFromRelic($url, $appId, $key, $start, $end){
	$url = "https://api.newrelic.com/v2/applications/$appId/metrics/data.JSON?names[]=$url&from=$start&to=$end&summarize=true";
	$opts = array(
			'http'=>array(
					'method'=>"GET",
					'header'=>"X-Api-Key: $relicKey\r\n" .
					"Accept: application/json\r\n"
	
			)
	);
	$context = stream_context_create($opts);
	$result = file_get_contents($url, false, $context);
	$json = json_decode($result,true);
	$count = $json['metric_data']['metrics'][0]['timeslices'][0]['values'][$key];
	return $count;
}

function sendToCloudBit($cloudBitKey, $deviceId, $durationInMillis, $valueType, $value){
	$url = "https://api-http.littlebitscloud.cc/v3/devices/$deviceId/output";
	$data = array($valueType => $value, 'duration_ms' => $durationInMillis);
	
	$options = array(
			'http' => array(
					'header'  => "Authorization: Bearer $cloudBitKey\r\n",
					'method'  => 'POST',
					'content' => http_build_query($data),
			),
	);
	
	$context  = stream_context_create($options);
	$result = file_get_contents($url, false, $context);
	
	echo "<br>Little Bit said: $result<br>";
}

?>