require_once __DIR__.'/vendor/autoload.php';
    
    $channelName = 'news';
    $recipient= 'ExponentPushToken[unique]';
    
    // You can quickly bootup an expo instance
    $expo = \ExponentPhpSDK\Expo::normalSetup();
    
    // Subscribe the recipient to the server
    $expo->subscribe($channelName, $recipient);
    
    // Build the notification data
    $notification = ['body' => 'Hello World!'];
    
    // Notify an interest with a notification
    $expo->notify([$channelName], $notification);

// Build the notification data
$notification = ['body' => 'Hello World!', 'data'=> json_encode(array('someData' => 'goes here'))];

$channelName = 'user_528491';
$recipient = 'ExponentPushToken[unique]';

// …

// Subscribe the recipient to the server
$expo->subscribe($channelName, $recipient);

// …

// Notify an interest with a notification, only one recipient will receive it
$expo->notify([$channelName], $notification);

$channelName = 'group_4815';

$recipient1 = 'ExponentPushToken[unique1]';
$recipient2 = 'ExponentPushToken[unique2]';

// …

// Subscribe the recipients to the server
$expo->subscribe($channelName, $recipient1);
$expo->subscribe($channelName, $recipient2);

// …

// Notify an interest with a notification, the 2 recipients will receive it
$expo->notify([$channelName], $notification);

// Build the notification data
$notification = ['body' => 'Hello World!', 'data'=> json_encode(array('someData' => 'goes here'))];