Im new to linux. This is a dedicated server running Fedora Core 2. I am trying to get a cron job to run its a php script that backs up the database. I can run this command anywhere to get it to work: php /root/bak.php, and thats what I have in cron, entry like this:

[root]# crontab -l
# DO NOT EDIT THIS FILE - edit the master and reinstall.
# (bak installed on Sun May 22 00:13:34 2005)
# (Cron version -- $Id: crontab.c,v 2.13 1994/01/17 03:20:37 vixie Exp $)
20 0 * * * php /root/bak.php

but it comes that time and noting happens in the cron log it appears as this:

May 22 00:20:00 216-55-186-242 CROND[2647]: (root) CMD (php /root/bak.php)

Any ideas? Thanks,