I downloaded symfony2 and I am able to run it starting from app_dev.php.
But when I start from app.php, then I get an error page 404.
app.php though is of co
I just wanted to integrate a couple of tips for this kind of problem since I faced it nowadays with a new fresh Symfony2 installation.
As a fresh installation you normally get AppBundle under /src/AppBundle together with AcmeDemoBundle under /src/Acme/DemoBundle
If you want to run AcmeDemoBundle on app_dev and, in the meanwhile, have an application ( i.e. AppBundle provided with fresh installation ) on app.php ( and avoid 404 ) you can also do something like that:
in /app/config/routing_dev.yml comment the following rows ( if you have them ):
_main:
resource: routing.yml
in /app/config/routing.yml add a new route ( if you don't have )
index:
pattern: /
defaults: { _controller: AppBundle:Default:index }
then empty cache like already advised by the others and test the application on
1) http:// your_application_path/web/
2) http:// your_application_path/web/app_dev.php
If everything is fine on the first one you should get a white page with a string "Homepage." ( to edit this one go in /app/Resources/views/default/index.html.twig... Layout for this one is base.html.twig ) and, on the second one you should get the DemoBundle provided by Symfony2.
Hope it helps!