While running info.php file I got the error 404 server not found. Means there’s a problem with the path. Either Document root is not correct in /etc/apache2/sites-avaialble/000-default.conf configuration file or may be php code is not in right place.
By default the path for Document root in 000-default.conf file is /var/www/html but we can change this by changing it here. Make sure the you are giving here is correct.
$ sudo vim /etc/apache2/sites-available/000-default.conf
So, our php code should also be stored here.
$ cd /var/www/html
simran@playstation:/var/www/html$ sudo vim info.php
:wq to save and quit from vim
Go to the browser and type- http://localhost/info.php
It will display the output file.