Documentation Fix

README.md

@@ -54,7 +54,7 @@ You can easily send a message to all registered users with the command
     OneSignal::sendNotificationToAll("Some Message");
     OneSignal::sendNotificationToAll("Some Message", $url);
     OneSignal::sendNotificationToAll("Some Message", $url, $data);
-    OneSignal::sendNotificationToAll("Some Message", $url, $data,$buttons);
+    OneSignal::sendNotificationToAll("Some Message", $url, $data, $buttons);
 
 `$url` , `$data` and `$buttons` fields are exceptional. If you provide a `$url` parameter, users will be redirecting to that url.
 
@@ -66,7 +66,7 @@ After storing a user's tokens in a table, you can simply send a message with
     OneSignal::sendNotificationToUser("Some Message", $userId);
     OneSignal::sendNotificationToUser("Some Message", $userId, $url);
     OneSignal::sendNotificationToUser("Some Message", $userId, $url, $data);
-    OneSignal::sendNotificationToUser("Some Message", $url, $data, $buttons);
+    OneSignal::sendNotificationToUser("Some Message", $userId, $url, $data, $buttons);
 
 `$userId` is the user's unique id where he/she is registered for notifications. Read https://documentation.onesignal.com/docs/website-sdk-api#getUserId for additional details.
 `$url` , `$data` and `$buttons` fields are exceptional. If you provide a `$url` parameter, users will be redirecting to that url.
@@ -79,7 +79,7 @@ You can simply send a notification to a specific segment with
     OneSignal::sendNotificationToSegment("Some Message", $segment);
     OneSignal::sendNotificationToSegment("Some Message", $segment, $url);
     OneSignal::sendNotificationToSegment("Some Message", $segment, $url, $data);
-    OneSignal::sendNotificationToSegment("Some Message", $url, $data, $buttons);
+    OneSignal::sendNotificationToSegment("Some Message", $segment, $url, $data, $buttons);
 
 `$url` , `$data` and `$buttons` fields are exceptional. If you provide a `$url` parameter, users will be redirecting to that url.