0 7 * * 1 root /usr/bin/wget -q http://localhost/digest_weekly.php -O - >> /var/log/digest_weekly.log

127.0.0.1 - - [23/May/2016:07:00:01 +0000] "GET /digest_weekly.php HTTP/1.1" 200 70941 "-" "Wget/1.16.1 (linux-gnu)"
127.0.0.1 - - [23/May/2016:07:15:02 +0000] "GET /digest_weekly.php HTTP/1.1" 200 70941 "-" "Wget/1.16.1 (linux-gnu)"
127.0.0.1 - - [23/May/2016:07:30:04 +0000] "GET /digest_weekly.php HTTP/1.1" 200 70917 "-" "Wget/1.16.1 (linux-gnu)"

May 30 07:00:01 ip-172-31-8-62 CROND[8104]: (root) CMD (/usr/bin/wget -q http://localhost/digest_weekly.php -O - >> /var/log/synkratos/digest_weekly.log)

0 7 * * 1 root /usr/bin/php /path/to/digest_weekly.php  >> /var/log/digest_weekly.log