Sometimes it’s really important to test multiple websites on localhost. How we can do that? Very easy! 
.. Yes we can use different port for each site. Some days ago i found one of the windows hosting server did this for their different users. So we can also be able to to it in apache..
What we need is to initialize the port for each site.. here is an example
We need to edit our httpd.conf file and paste these code in the suitable place
Listen 127.0.0.1:8000
Listen 127.0.0.1:1111
BindAddress 127.0.0.1
Port 1111
Port 8000
ServerName 127.0.0.1
NameVirtualHost *
<VirtualHost *:8000>
DocumentRoot “/home/username/test/example.org/htdocs”
<Directory “/home/username/test/example.org/htdocs”>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
<VirtualHost *:1111>
DocumentRoot “/home/username/test/example.com/htdocs/”
<Directory “/home/username/test/example.com/htdocs/”>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
done, now port 8000 is for our development and 1111 is for testing purpose
enjoy
