installing Symfony 2.3 under Windows (XAMPP)

These are the steps for the installation of Symfony 2.3 under Windows: (see http://uploads.siteduzero.com/pdf/517569-developpez-votre-site-web-avec-le-framework-symfony2.pdf)

1. Add the folder of you "php.exe" in the value of your Path entry within the Windows environment variables ( Open the Start Menu and right click on Computer -  Select Properties - Select Advanced system settings - In the Advanced tab, select Environment Variables. Find the path entry and add at the end : ";C:\[php_folder]\php" )
2. Launch the command prompt
3. Go to the web folder used by your local webserver (when using Xampp under MS Windows, that shoud be [xampp_folder]\htdocs)
4. Install composer using the following command : php -r "readfile('https://getcomposer.org/installer');" | php
5. Install Symfony with Composer using the following command : php composer.phar create-project symfony/framework-standard-edition [name_web_appli] for example : 
   php composer.phar create-project symfony/framework-standard-edition sf3
6. Different questions will be asked during the installation (put the default values):

Would you like to install Acme demo bundle ? y/N => y
Database driver : pdo_mysql
Database host : localhost
Database port : null
Database name : symfony
Database user : root
Database password : null
Mailer transport : smtp
Mailer host: localhost
Mailer user: null
Mailer password: null
locale: fr (or 'en') 
Secret: 123456789

1. Type the following URL : http://localhost/[name_web_appli]/web/app_dev.php
2. You should have the following screen if your installation is fine : 

To update symfony with new bundles, you should go to composer.json under the symfony directory (sf3 here above) and the bundle in the "require" list :  

    "require": {

        "php": ">=5.5.9",

        "symfony/symfony": "3.0.*",

        "doctrine/orm": "^2.5",

        "doctrine/doctrine-bundle": "^1.6",

        "doctrine/doctrine-cache-bundle": "^1.2",

        "symfony/swiftmailer-bundle": "^2.3",

        "symfony/monolog-bundle": "^2.8",

        "sensio/distribution-bundle": "^5.0",

        "sensio/framework-extra-bundle": "^3.0.2",

        "incenteev/composer-parameter-handler": "^2.0",

        "nelmio/api-doc-bundle":"^2.11"

    },

php ../composer.phar update

add the following code in  sf3/app/config/routing.yml

NelmioApiDocBundle:

    resource: "@NelmioApiDocBundle/Resources/config/routing.yml"

    prefix:   /api/doc

and the following one within "AppKernel.php" :    "new Nelmio\ApiDocBundle\NelmioApiDocBundle()," dans la liste des bundles

Next, all you need is to go that URL, to ensure that everything is working properly:
http://localhost/sf3/web/app_dev.php/api/doc

Under Linux, the installation can be done using the following command (on a Linux server with a LAMP stack) :

composer create-project symfony/framework-standard-edition [name_web_appli]  "3.0.*"

And go to :

http://[server_host]:[port_number]/[name_web_appli]/web/app_dev.php

Notice :  in order to have an access to this URL, you may have to delete some part of the file web/app_dev.php (for example, when using Docker) , especially, from ligne 13 to 19 :

if (isset($_SERVER['HTTP_CLIENT_IP'])

    || isset($_SERVER['HTTP_X_FORWARDED_FOR'])

    || !(in_array(@$_SERVER['REMOTE_ADDR'], ['127.0.0.1', 'fe80::1', '::1']) || php_sapi_name() === 'cli-server')

) {

    header('HTTP/1.0 403 Forbidden');

    exit('You are not allowed to access this file. Check '.basename(__FILE__).' for more information.');

}