I'm trying to setup an external cron job.

Funny thing is if I run php cron.php through commandline it works beautifully.

If I use the following cron

# crontab -l

*/5 * * * * php /usr/local/apache2/htdocs/helpdesk/api/cron.php

I get this error

To: root@workhorse.perfekt.local

Subject: Cron <root@workhorse> php /usr/local/apache2/htdocs/helpdesk/api/cron.p

hp

Content-Type: text/plain; charset=UTF-8

Auto-Submitted: auto-generated

X-Cron-Env: <SHELL=/bin/sh>

X-Cron-Env: <HOME=/root>

X-Cron-Env: <PATH=/usr/bin:/bin>

X-Cron-Env: <LOGNAME=root>

X-Cron-Env: <USER=root>

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/

imap.so' - /usr/lib/php/modules/imap.so: cannot open shared object file: No such

file or directory in Unknown on line 0

PHP Warning: session_start(): open(/var/lib/php/session/sess_p4eeg9fm60pmsdj2ik

pl09cpe1, O_RDWR) failed: No such file or directory (2) in /usr/local/apache2/ht

docs/helpdesk/main.inc.php on line 51

Warning: session_start(): open(/var/lib/php/session/sess_p4eeg9fm60pmsdj2ikpl09c

pe1, O_RDWR) failed: No such file or directory (2) in /usr/local/apache2/htdocs/

helpdesk/main.inc.php on line 51

PHP Warning: session_start(): Cannot send session cookie - headers already sent

by (output started at /usr/local/apache2/htdocs/helpdesk/main.inc.php) in /u

sr/local/apache2/htdocs/helpdesk/main.inc.php on line 51

Warning: session_start(): Cannot send session cookie - headers already sent by (

output started at /usr/local/apache2/htdocs/helpdesk/main.inc.php) in /usr/lo

cal/apache2/htdocs/helpdesk/main.inc.php on line 51

PHP Warning: session_start(): Cannot send session cache limiter - headers alrea

dy sent (output started at /usr/local/apache2/htdocs/helpdesk/main.inc.php) i

n /usr/local/apache2/htdocs/helpdesk/main.inc.php on line 51

Warning: session_start(): Cannot send session cache limiter - headers already se

nt (output started at /usr/local/apache2/htdocs/helpdesk/main.inc.php) in /us

r/local/apache2/htdocs/helpdesk/main.inc.php on line 51

What am I doing wrong guys?

Thanks in advance