Cronjob - Warning output when cronjob only?

[webcanada]

Hi guys,

I have a script which runs perfectly fine when called from a web browser via the Internet, but, when I've set it up as a cronjob, I get this warning:

PHP Warning: Unknown(): Unable to load dynamic library '/usr/lib/php4/gpgext.so' - /usr/lib/php4/gpgext.so: cannot open shared object file: No such file or directory in Unknown on line 0

The file still runs and does what its supposed to, but how do I get rid of this?

Also, is there a way to suppress having the automatic email sent? This job runs every 10 minutes, and I get an e-mail each time.

Thanks