\\\\////
        |.)(.|
        | || |   Changeset calculator between two state of a data
        \(__)/   Requires PHP 5.4 ; Compatible PHP 5.5, PHP 5.6, and HHVM
        |-..-|
        |o\/o|
   .----\    /----.
  / / / |~~~~| \ \ \
 / / / /|::::|\ \ \ \
'-'-'-'-|::::|-'-'-'-'
       (((^^)))
        >>><<<   Snapshots currently natively supported :
        ||||||   - Array
        (o)(o)   - Object
        | /\ |   - Collection
        (====)
       _(_,__)
      (___\___)

For any pieces of document, please look for the docs/ directory. You may also check up the compiled version

You have multiple ways to install Totem. If you are unsure what to do, go with the archive release.

1. Download the most recent release from the release page
2. Unpack the archive
3. Move the files somewhere in your project

1. Install Git
2. git clone git://github.com/Wisembly/Totem.git

1. Install composer in your project: curl -s http://getcomposer.org/installer | php

2. Create a composer.json file (or update it) in your project root:

     {
       "require": {
         "wisembly/totem": "~1.4"
       }
     }

3. Install via composer : php composer.phar install

<?php

use Totem\Snapshot\ArraySnapshot;

$array = ['foo' => 'bar', 'baz' => 'qux'];
$snapshot = new ArraySnapshot($array); // Totem\Snapshot\ArraySnapshot

$array['foo'] = 'fubar';
$set = $snapshot->diff(new ArraySnapshot($array)); // Totem\Set

var_dump($set->hasChanged('foo'),
         $set->getChange('foo')->getOld(),
         $set->getChange('foo')->getNew(),
         $set->hasChanged('bar'));

/* 
 * expected result :
 *
 * bool(true)
 * string(3) "bar"
 * string(5) "fubar"
 * bool(false)
 */

$ php composer.phar install --dev
$ bin/phpunit