You open your web page and your browser ask to download a php file instead of opening the page. This means your server have trouble in parsing the php files.
Php parsing is a common problem that is occurred due to misconfiguration in the server side, can be fixed by accurate .htaccess rules.
- Backup your .htaccess file
- Delete the old .htaccess file
- Create a new .htaccess file with CHMOD = 777 and upload the new file in ascii mode.
- Add the following handler in the blank .htaccess
AddType application/x-httpd-php .php .htm .html AddHandler x-httpd-php .php .htm .html
Alternative Way: You cal also try to add following code in the blank .htaccess
AddType application/x-httpd-php php html
After creating the new .htaccess file, try to open your site, it should work.