website does'nt load at all after setting configuration settings for apache2 to set up a website on virtual host(ubuntu).

My /etc/hosts/:

127.0.0.1       localhost
127.0.1.1       ali-VirtualBox-ubuntu
127.0.1.2       mgip

#virtualhost


# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

My /etc/apache2/sites-available:

<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        ServerName mgip

        DocumentRoot /var/www/mgip/html/
        <Directory />
                Options FollowSymLinks
                AllowOverride None
        </Directory>
        <Directory /var/www/mgip/html/>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
        </Directory>

        ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
        <Directory "/usr/lib/cgi-bin">
                AllowOverride None
                Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
                Order allow,deny
                Allow from all
        </Directory>

ServerName in apache2/httpd.conf:

ServerName 127.0.1.2 mgip

My apache2/ports.conf:

# If you just change the port or add more ports here, you will likely also
# have to change the VirtualHost statement in
# /etc/apache2/sites-enabled/000-default
# This is also true if you have upgraded from before 2.2.9-3 (i.e. from
# Debian etch). See /usr/share/doc/apache2.2-common/NEWS.Debian.gz and
# README.Debian.gz

NameVirtualHost *:80
Listen 80

<IfModule mod_ssl.c>
    # If you add NameVirtualHost *:443 here, you will also have to change
    # the VirtualHost statement in /etc/apache2/sites-available/default-ssl
    # to <VirtualHost *:443>
    # Server Name Indication for SSL named virtual hosts is currently not
    # supported by MSIE on Windows XP.
    Listen 443
</IfModule>

<IfModule mod_gnutls.c>
    Listen 443
</IfModule>

I did all the necessary steps to set up a virtual host shown in this website:
How To Set Up Apache Virtual Hosts on Ubuntu 12.04 LTS
as well as on other, but couldn't find the exact problem.

This is the config.php file of my website:

<?

// Bring in and make any configurations.
// (not really implemented anywhere yet).
@$configOption=array_merge( # don't show errors here
  array(

  ),
  $configOption
);

define('ADMIN_EMAIL',"[email protected]");
$defaultDocRoot='/var/www/mgip/html';
define('PUBLIC_USERNAME',"public");
define('PUBLIC_PASSWORD',"password");
$defaultLanguage='en';

// mysql
$databaselocation   =   "localhost";   // Network location of your MySQL Database
$databasename       =   "mgip"; // The name of the database 
$databaseuser       =   "mgip";        // The name of a user 
$databasepass       =   "mysql";            // Password of db user
$databaseprefix     =   "cdc2_";

earlier it gave me an error that access denied for user 'mgip'@'localhost'. I created a new user with all the grants for that database. The DB problem was solved but it still gives me a blank white page.

please help me out.