I'm trying to use the crypt function on a password - but for some reason it returns
Fatal error: Call to unsupported or undefined function crypt() in /usr/local/plesk/apache/vhosts/nerdgirl.com/httpdocs/test.php3 on line 11

The syntax that i'm using is
crypt($password);

Any idea if this is some server configuration problem?

Thanks in advance.