enabled apache now,php not working

Are you sure apache is running?
Run 'sudo /etc/init.d/apache* start' in a terminal.
If this does not work try to enter 'sudo netstat -lpt | grep apache' to see what ports apache is running on. You should configure apache to listen to the wanted ports (80 by default).

Still getting some errors :::::::::

a@edubuntu:~$ sudo /etc/init.d/apache*
[sudo] password for a:
 * Usage: /etc/init.d/apache2 {start|stop|restart|reload|force-reload|start-htcacheclean|stop-htcacheclean}
a@edubuntu:~$ sudo /etc/init.d/apache* start
 * Starting web server apache2 apache2: apr_sockaddr_info_get() failed for edubuntu
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
                                                                                                                                                      [ OK ]
a@edubuntu:~$
a@edubuntu:~$ sudo netstat -lpt | grep apache
a@edubuntu:~$

Solved the above problem but still i am not able to view localhost or 127.0.0.1 in the browser.

a@edubuntu:~$ sudo /etc/init.d/apache*
[sudo] password for a:
 * Usage: /etc/init.d/apache2 {start|stop|restart|reload|force-reload|start-htcacheclean|stop-htcacheclean}
a@edubuntu:~$ sudo /etc/init.d/apache* start
 * Starting web server apache2 apache2: apr_sockaddr_info_get() failed for edubuntu
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
                                                                                                                                                      [ OK ]
a@edubuntu:~$
a@edubuntu:~$ sudo netstat -lpt | grep apache
a@edubuntu:~$ sudo /etc/init.d/apache2 start
 * Starting web server apache2 apache2: apr_sockaddr_info_get() failed for edubuntu
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
                                                                                                                                                      [ OK ]
a@edubuntu:~$ sudo gedit /etc/apache2/apache2.conf
a@edubuntu:~$ sudo gedit /etc/apache2/apache2.conf
a@edubuntu:~$ gksu "gedit /etc/apache2/conf.d/fqdn"
a@edubuntu:~$ sudo /etc/init.d/apache2 start
 * Starting web server apache2 [ OK ]
a@edubuntu:~$ sudo /etc/init.d/apache2 start
 * Starting web server apache2 [ OK ]
a@edubuntu:~$ sudo netstat -lpt | grep apache
a@edubuntu:~$

a@edubuntu:~$ sudo apache2ctl
Usage: /usr/sbin/apache2ctl start|stop|restart|graceful|graceful-stop|configtest|status|fullstatus
       /usr/sbin/apache2ctl <apache2 args>
a@edubuntu:~$ sudo apache2ctl start
a@edubuntu:~$ sudo apache2ctl full status
Usage: /usr/sbin/apache2 [-D name] [-d directory] [-f file]
                         [-C "directive"] [-c "directive"]
                         [-k start|restart|graceful|graceful-stop|stop]
                         [-v] [-V] [-h] [-l] [-L] [-t] [-S] [-X]
Options:
  -D name : define a name for use in <IfDefine name> directives
  -d directory : specify an alternate initial ServerRoot
  -f file : specify an alternate ServerConfigFile
  -C "directive" : process directive before reading config files
  -c "directive" : process directive after reading config files
  -e level : show startup errors of level (see LogLevel)
  -E file : log startup errors to file
  -v : show version number
  -V : show compile settings
  -h : list available command line options (this page)
  -l : list compiled in modules
  -L : list available configuration directives
  -t -D DUMP_VHOSTS : show parsed settings (currently only vhost settings)
  -S : a synonym for -t -D DUMP_VHOSTS
  -t -D DUMP_MODULES : show all loaded modules
  -M : a synonym for -t -D DUMP_MODULES
  -t : run syntax check for config files
  -X : debug mode (only one worker, do not detach)
a@edubuntu:~$ sudo apache2ctl status
w3m: Can't load http://localhost:80/server-status.
a@edubuntu:~$ sudo apache2ctl restart
httpd not running, trying to start
a@edubuntu:~$ sudo apache2ctl start
a@edubuntu:~$ sudo apache2ctl restart
httpd not running, trying to start
a@edubuntu:~$

i added "ServerName localhost" at /etc/apache2/conf.d/fqdn

a@edubuntu:~$ apache2 -k start
(13)Permission denied: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs

problem solved but i cant find the www directory where i can place the .php .html files ????

where is the www directory now ??

its not in var/www ........i mean there is a directory for the same but i am not getting any listed files there.
i have even installed php but it isnt showing in the localhost.

404 Not Found:
Not Found

The requested URL / was not found on this server.
Apache/2.2.4 (Ubuntu) Server at localhost Port 80

changed the www directory successfully but php is not enabled now.........

i cant run php scripts.

httpd.conf is empty in the folder /etc/apache2/

problem solved.......installed again