如何让crontab使用php脚本？

i'm triying to make my crontab working

I use the cmd crontab -e to edit my crontab, then use :

* * * * * /usr/bin/php /var/www/path/script.php

It should send me an email each minute to test but nothing..

I tried to mailto the output but I receive nothing. I check my log with grep CRON /var/log/syslog but I just get :

(root) CMD (/usr/bin/php /var/www/path/script.php)

What did I do wrong ?

Thanks