Your symfony project derectory is “/var/www/html/sf_sandbox” so in the browser you can acess this by this URL : “http://localhost/sf_sandbox/web/frontend.php/”
So if you want to map the symfony project directoy to your web root directory ie i mean to say you just want to acess it my using the URL :”http://localhost/” then you have to add the below line in the httpd.conf file and then restart your apache server.After that you can directly acess the symfony project from localhost url.
<VirtualHost *:80>
ServerName http://localhost/
DocumentRoot “/var/www/html/sf_sandbox/web”
DirectoryIndex index.php
<Directory “/var/www/html/sf_sandbox/web”>
AllowOverride All
Allow from All
</Directory>
</VirtualHost>
Rest of the things will be handled by symfony itself.