共享主机上的wget和spider CRON命令

Question

I've old php script which is running on shared hosting.
In order to use all the functionality I should use this CRON task command:
wget --spider -O - http://web.com/cron >/dev/null 4>&8

But the problem is that my CronJob in cPanel only accepts plain URL. No external commands are allowed.

So the question is simple, is there a way to execute these commands: "wget --spider -O - and >/dev/null 4>&8"

Example is needed