PHP CRON job, not output HTTP headers

I have a PHP script that is called via a cron job, with the results sent to my email address: ``` "php /path/to/cron.php" ``` I only echo errors, otherwise nothing is outputted by me. This way I can get an error report when things go wrong. The problem is, I receive an email with ever cron execution, that only has the HTTP headers in it: ``` X-Powered-By: PHP/5.2.10 Content-type: text/html ``` This is obviously a pain, receiving multiple emails every few minutes. All I'd like to see are emails for cron jobs where I've echo'd something. I want to keep the email being generated by the cron job if possible (instead of sending the email in-script). And I don't want to run it via wget, because my host counts that against my bandwidth. All my searching has only shown me how to set headers, not remove/suppress the default ones. Am I going about this wrong? Has anybody else seen this? Thanks