This blog made as example of simple application based on Symfony 2, Doctring ODM and MongoDB.

Step 1: Install MongoDB and corresponding PHP extension

If you still don't have MongoDB installed it's time to get it. Follow this installation guide. You also have to enabled PHP extension for MongoDB. You can use this installation guide.

Step 2: Set configuration

Create file app/config/parameters.yml. You can copy it from app/config/parameters.yml.dist. Make sure that mongodb_server and mongodb_database database_paths are correct.

Also change secret parameter with other unique value.

Step 2: Get composer

Composer is a tool for dependency management in PHP. It allows you to declare the dependent libraries your project needs and it will install them in your project for you.

To install it globally on linux use these commands:

$ curl -s https://getcomposer.org/installer | php
$ sudo mv composer.phar /usr/local/bin/composer

Step 3: Install vendors

Go to project root directory and run following command:

composer install

For Apache virtual host configuration might look like that:

```
<VirtualHost *:80>
    DocumentRoot "/var/www/symfony_blog/web/" # in your environment path might differs
    ServerAdmin admin@localhost
    ServerName symfony-blog.local # in your environment server name might differs

    <Directory "/var/www/symfony_blog/web/"> # in your environment path might differs
        Options FollowSymLinks
        Options all
        AllowOverride All
    </Directory>
</VirtualHost>
```

Open URL http://symfony-blog.local/app_dev.php/ (your URL might be different). You should see blog start page.

You need installed PHPUnit.

Create app/phpunit.xml file from app/phpunit.xml.dist. You can run all tests using command.

```
phpunit -c app/phpunit.xml
```

Enjoy!