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if not then you could use lynx - try this post for more info:
re: cpanel - i don't. sorry.
p.s. if you search these forums you'll find plenty of references to php and cron.
The command is simply:
wget -O /dev/null [example.com...]
The -O /dev/null part means send the output to the null device so that no disk space is taken up with the HTML (or whatever) output from your script.