Fatal error: Call to undefined function degiskenal() in /var/www/vhosts/ehcp/index.php on line 21

Latest version Ehcp, Ubuntu server 8.
Installation doesnt stop with errors, but when I open http://myip/vhosts/ehcp/ i see the php source (or something like that)
It starts with
(dbbaglan)Baglanilamadi-confdir: $confdir, username: $mysq
goes for 20-30 pages
end ends with
Fatal error: Call to undefined function degiskenal() in /var/www/vhosts/ehcp/index.php on line 21

I am very new to ubuntu and have no idea what could be the problem.
I have another web application that is running - php and mysql, and its ok.

Turninig on short_open_tag in php.ini solves the problem

in fact, that should not need a php.ini change,
i will fix it source code too..
that is because:
in source code, php code starts with <?
i will fix all to <?php