Push notifications in php
Question
How to implement push notifications in PHP based webapp. What I actually want to implement is to get a notification as soon as some user joins a chat.
suppose two users are participants in a chat, if a third user joins that chat, then other two user be notified.
5 answers
solution1
1 2013-05-01 12:20:32
I think you mean notifications to the user using Javascript. This could be done using websockets (HTML5) or javascript that every x seconds makes a call to your server.
Websockets are hard to setup are my experience.
every x seconds is, 1 a waste of resource often and leads to a lot of trouble when you get a lot of visitors.
The solution I use is an api called pusher . I use it only for apps for my self so I use the free version. But it works like a charm and is easy to setup
Also look at http://en.wikipedia.org/wiki/Push_technology , from Anigel
solution2
1 2013-05-01 14:15:24
What about adding NodeJS + SocketIO to your stack?
SocketIO let's you create a room for your clients and it can emit messages to a room of clients.
Let me show you a basic example:
notification.js
var app = require('http').createServer(),
io = require('socket.io').listen(app);
app.listen(3000);
io.sockets.on('connection', function (socket) {
// Joining a room
socket.join('chatroom');
socket.on('newUserJoinRequest', function(data) {
socket.broadcast.to('chatroom').emit('newUserJoinedNotification', data);
})
});
client.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript" src="http://localhost:3000/socket.io/socket.io.js"></script>
</head>
<body>
<input type="text" id="username" placeholder="name">
<button type="text" id="joinButton">Join</button>
<div id="responses">
<h2>NodeJS+SocketIO responses:</h2>
<ul></ul>
</div>
<script>
var socket;
jQuery(document).ready(function() {
socket = io.connect('//localhost:3000');
socket.on('newUserJoinedNotification', function(data) {
var li = '<li>A new user joined the room: ' + data.name + '</li>';
jQuery('#responses ul').append(li);
});
});
jQuery('#joinButton').click(function() {
var username = jQuery('#username').val();
socket.emit('newUserJoinRequest', {name: username});
});
</script>
</body>
</html>
solution3
0 2013-05-01 12:22:21
True push from server to client is not (easily) possible with PHP. What you will need is polling. You can create a message queue on the server for each connected client and the client automatically retrieves the contents of that queue with a poller (so basically doing requests every set interval).
solution4
0 2013-05-01 12:53:12
If you want it to be simple, then you need to look into either polling, long polling or using an api. http://en.wikipedia.org/wiki/Push_technology
There is no way using php to make the server open up a connection via proxies, firewalls etc to a program on a computer when that computer hasn't already got a connection to the server and said it is waiting for data.
That is effectively what long polling does, the client makes a connection to the server and keeps it open waiting for the server to tell it something, or until it times out. If it times out, then it reconnects
solution5
0 2017-11-16 20:35:22
You can set up push notifications without developing your own app using notify.pm. It takes around 2 lines of code, the API is here: https://github.com/notifypm/notifypm-php-api
<?php
require_once("notifypm.class.php");
$n = new Notifypm('email', 'password', '.pmNumber');
$n->push('Message!', 'Link (optional)!');
$n->disconnect();
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