How to send push notifications to multiple devices using php script using FCM?

Question

I\'m new to push notifications using FCM from php to Android devices. From android side I have generated FCM reg_id & send it over php script & store into mysql data

Answer 1

Try to send device ID of multiple devices as an array. In your case,

$registration_ids must be an array of device IDs.

E.g

$registration_ids = array('Device ID 1', 'Device ID 2');