Backbone.js and slim framework exmaple

client.js

// define a user model
App.models.User = Backbone.RelationalModel.extend({
	urlRoot: '/api/users/',
	defaults: {
		first_name: '',
		name_last_name: '',
		email: ''
	}
});

//create an empty user in client memory
var user = new App.models.User();

//assign some values and save to server
user.save({
  first_name: 'Dan',
  last_name: 'Hollenbeck',
  email: 'dan@hollenbecks.com'
});

//after creating the user the server returns all of the attributes of mode.
//so some where else in the application, after a successful save
// print the auto increment of the created record
console.log( user.get('id'));


//reading data from the server
var user2 = new App.models.User();
user2.set({
  id: 123
});
user2.fetch();

server.php

require_once '../../../settings.php';
require '../../../api.php';
$api = new ApiSlim();

$api->post('/users/',function() use ($api){ //create
	try {
		$user = Model\User::instance();
		$fa = $api->fields();  //get the json data from the body of the request and decode it to an array
		$id = $user->create($fa);
		$record = $user->read($id);
		$api->ok($record);
	} catch(Exception  $e){
		$api->exception($e);  //handle exceptions in a way that enforces a restful response.
	}
});

$api->get('/users/:id', function($id) use ($api){ //read
	try {

		if(!validate::required($id)) throw new BaseException('Missing user_id.');
		if(!validate::integer($id)) throw new BaseException('Invalid user_id.');

		$user = Model\User::instance();
		$result = $user->read($id);
		$api->ok($result);
	} catch(Exception  $e){
		$api->exception($e);
	}
});