USAePay Sales Rate Monitor/Alert

Monitors the rate of sales in USAePay, sends email alert if rate drops.

To get up and running:

1. cp config.php.template config.php
2. Fill-in config.php settings. Info about getting USAePay API credentials here: https://wiki.usaepay.com/developer/soap.
3. Run php run.php.
4. Check "Now (adjusted server time)" in the output, this should match your current time in USAePay. If not, adjust timediff in config.php.
5. I would recommend running this as a cron job, every 10-30 minutes.

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Given an interval (in config.php) of time (60 minute default), you USAePay account will compare the most recent interval of that time against the previous interval.

If the growth rate is below the given threshold (in config.php), an email is sent containing the same output of the CLI script.

Growth rate of 1 means same number of orders in both intervals; .5 would mean half as many orders in most recent interval as previous interval.