fcm php backend

http://sab99r.com/blog/firebase-cloud-messaging-fcm-php-backend/

OK Lets start coding… For easy implementation I created a function named sendMessage with two parameters data and target. here is the function.

	<?php
	/*
	Parameter Example
	$data = array('post_id'=>'12345','post_title'=>'A Blog post');
	$target = 'single tocken id or topic name';
	or
	$target = array('token1','token2','...'); // up to 1000 in one request
	*/
	public function sendMessage($data,$target){
	//FCM api URL
	$url = 'https://fcm.googleapis.com/fcm/send';
	//api_key available in Firebase Console -> Project Settings -> CLOUD MESSAGING -> Server key
	$server_key = 'PASTE_YOUR_SERVER_KEY_HERE';
	$fields = array();
	$fields['data'] = $data;
	if(is_array($target)){
	$fields['registration_ids'] = $target;
	}else{
	$fields['to'] = $target;
	}
	//header with content_type api key
	$headers = array(
	'Content-Type:application/json',
	'Authorization:key='.$server_key
	);
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
	$result = curl_exec($ch);
	if ($result === FALSE) {
	die('FCM Send Error: ' . curl_error($ch));
	}
	curl_close($ch);
	return $result;
	}