Why isn't the cron job running?

Question

linux

Scripts collect information and enter it into the database. If you run the scripts from the browser, then everything works.
New rows appear in the database tables.
I need to collect information every 30 minutes. So I created a cron job.

*/30 * * * * /usr/bin/php5  /var/www/4/get_data_from_site/get_data_from_site1.php >/dev/null 2>&1
*/30 * * * * /usr/bin/php5  /var/www/4/get_data_from_site/get_data_from_site2.php >/dev/null 2>&1

Restarted cron.
But 2 hours have passed, and there are no new rows in the database tables. Those. the task is not running.
Why isn't the cron job running?

Answer 1

can be called as a site. run curl on the crone ... it will be even more convenient this way ...

Answer 2

what user is the script running as?
redirect the output to a file (not to /dev/null) and see what's swearing

Answer 3

I would first check if the service is running at all :-)