thanks for the suggestion.
i tried using a crontab script, but it didn't seem to execute. what i discovered is the program i wrote, which is a .php, won't run on my shell -- i'd been testing in using a link from my main website. i put in a lot of print statements to see where i'm running in to errors. it turns out almost immediately.
my code starts off
!/usr/bin/php
<?php
echo "starting";
//require common code (this connects me to database)
require_once("inc/common.inc");
echo "required";
"starting" is the only thing that will print. any ideas why it stops when i try to require common.inc? common.inc contains constants, the connection to the sql database, and a few other functions.