Using PHP to send FCM notification getting error "error":"MismatchSenderId"

[anilkumar2273702]

I'm using PHP to send FCM notification to Expo android apps, but getting error - "error":"MismatchSenderId"

[mikehardy]

Sounds like you should match your sender id.

[anilkumar2273702]

@mikehardy Where should I match sender id in PHP code?
I'm using the following code in PHP -

$regId ="egDtmlLURSqb__yBaAAQHt:APA91bGfFVzyggKG-IGZc8zCUCGtEl95Gll6N3zbNAy5........................"; // "REGISTRATION ID" from the response above. If this is wrong it throws an error ("InvalidRegistration"), so I know that this is correct.

$url = 'https://fcm.googleapis.com/fcm/send';
// $msg = array
// (
// 'body' => 'body msg',
// 'title' => 'title',
// 'icon' => 'myicon',/Default Icon/
// 'sound' => 'mySound'/Default sound/
// );

$fields = array (
'registration_ids' => array (
$regId
),
'data' => array (
"message" => "Test"
)
// 'to' => $regId,
// 'notification' => $msg
);
$fields = json_encode ( $fields );

$headers = array (
'Authorization: key=' . "AAAA792FeiQ:APA91bGcnMy8I2mzEDO5Z98WTvMvHMlJDUdO0Ood-_xFdF1NDQ2mKwyhyPYrSSysoX0EqQdp71gU-.........................", //This is the "Server key" above "Sender ID"
//This matches "Project Settings" > "Cloud Messaging" > [Server Key]
//If this is wrong it returns: INVALID_KEY error 401. So I know this is correct.
'Content-Type: application/json'
);

$ch = curl_init ();
curl_setopt ( $ch, CURLOPT_URL, $url );
curl_setopt ( $ch, CURLOPT_POST, true );
curl_setopt ( $ch, CURLOPT_HTTPHEADER, $headers );
curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt ( $ch, CURLOPT_POSTFIELDS, $fields );

$result = curl_exec ( $ch );
echo $result;
curl_close ( $ch );

[mikehardy]

This seems better suited to stackoverflow
Your problem will not result in a change to this module, this module works for sending and receiving FCM so what you have is a project-specific problem and stackoverflow will get you answers from the wider community