Send android notification via firebase from heroku php server - php

Question

I'm attempting to push a notification to a specific Android device using a heroku PHP server. I'm not having any luck in doing so, however.
I can push a notification through the firebase console just fine (i.e. the problem is not with my Android app).
Here is my code (which I got from How do I send a POST request with PHP?):
$url = 'https://fcm.googleapis.com/fcm/send';
$data = array('score' => '5x1', 'time' => '15:10');
// use key 'http' even if you send the request to https://...
$options = array(
'http' => array(
'header' => "Content-type: application/json\r\n" .
"Authorization: key=MY_SERVER_KEY\r\n",
'method' => 'POST',
'data' => http_build_query($data),
'to' => 'MY_FCM'
)
);
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
if ($result === FALSE) { /* Handle error */ }
var_dump($result);
I feel like I'm doing something terribly basic wrong (like my JSON is not formatted correctly or something).
The firebase apis can be found here: https://firebase.google.com/docs/cloud-messaging/send-message
I've been working on this for a couple days now, and any assistance will be much appreciated. Thanks guys!
Update
A quick note that Heroku doesn't support the HttpRequest() class from what I've experienced, however, cURL works great. Also, I didn't mention it, but I was actually wanting a notification message to be sent, not just a data message. So, my final code looked like the following:
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://fcm.googleapis.com/fcm/send",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "{\n
\"notification\" : {\n
\"body\" : \"Goku\",\n
\"title\" : \"Over 9000\",\n
},\n
\"to\" : \"MY_FCM_TOKEN\"\n
\"priority\" :
\"high\"\n
}",
CURLOPT_HTTPHEADER => array(
"authorization: key=MY_SERVER_KEY",
"cache-control: no-cache",
"content-type: application/json"
),
));
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}

Answer 1

In your code
'http' => array(
'header' => "Content-type: application/json\r\n" .
"Authorization: key=MY_SERVER_KEY\r\n",
'method' => 'POST',
'data' => http_build_query($data),
'to' => 'MY_FCM'
)
you have to send data and to inside the key 'content'.
/* $mydata contains 'data' and 'to' */
'http' => array(
'header' => "Content-type: application/json\r\n" .
"Authorization: key=MY_SERVER_KEY\r\n",
'method' => 'POST',
'content' => http_build_query($mydata)
)
These are few recommended ways to send fcm notification using php
HttpRequest
$request = new HttpRequest();
$request->setUrl('https://fcm.googleapis.com/fcm/send');
$request->setMethod(HTTP_METH_POST);
$request->setHeaders(array(
'cache-control' => 'no-cache',
'content-type' => 'application/json',
'authorization' => 'key=YOUR_FCM_API_KEY'
));
$request->setBody('{
"data" : {
"name" : "Goku",
"power_level" : "Over 9000",
"fighting_skill" : "excellent"
},
"to" : "FCM_ID_OF_RECIEVER"
}');
try {
$response = $request->send();
echo $response->getBody();
} catch (HttpException $ex) {
echo $ex;
}
pecl_http
<?php
$client = new http\Client;
$request = new http\Client\Request;
$body = new http\Message\Body;
$body->append('{
"data" : {
"name" : "Goku",
"power_level" : "Over 9000",
"fighting_skill" : "excellent"
},
"to" : "FCM_ID_OF_RECIEVER"
}');
$request->setRequestUrl('https://fcm.googleapis.com/fcm/send');
$request->setRequestMethod('POST');
$request->setBody($body);
$request->setHeaders(array(
'cache-control' => 'no-cache',
'content-type' => 'application/json',
'authorization' => 'key=YOUR_FCM_API_KEY'
));
$client->enqueue($request)->send();
$response = $client->getResponse();
echo $response->getBody();
cURL
<?php
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://fcm.googleapis.com/fcm/send",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "{\n \"data\" : {\n \"name\" : \"Goku\",\n \"power_level\" : \"Over 9000\",\n \"fighting_skill\" : \"excellent\"\n },\n \"to\" : \"FCM_ID_OF_RECIEVER\"\n}",
CURLOPT_HTTPHEADER => array(
"authorization: key=YOUR_FCM_API_KEY",
"cache-control: no-cache",
"content-type: application/json"
),
));
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}