lesson in NOT how to run your php website ...

I teach law at a university .. I also run the website here ... php with a mysql backend ... - I have been designing a client side administration tool which allows you to setup both the html input form to request from a database and format the way the results look and are returned ... so that academics can setup and run their own databases ... - of course during setup and debugging I ran from the /temp directory of the website (we dont have a test machine) - after debugging was over i forgot about the extra copy of this script in the /temp directory and forgot to delete it ..(there was no security on the script) - what i also forgot was that in my last lecture series I had left the presentation files for the students in the .. you guessed it ... /temp directory .. - the students .. being students didnt actually look at the lecture notes very much, and i had deleted them .. - however its exam time ... and all of them in a flurry logged on to the site ('/temp') ... but instead of finding the lecture series they find this strange control panel with lots of weird buttons... - web user + strange buttons on page => bugger ... so about two weeks ago the site started to go haywire ... links stopped working .. databases started screwing up .. - i had entirely forgot about the contents of the /temp directory .. - i was going INSANE trying to continually fix the site .. - i thought we were being hacked and ran a constant netstat, logged all visitor activity and made two separate complaints about what seems now were innocent web users ... - i didnt sleep - my girlfriend nearly dumped me .. - i was sure there was a conspiracy at hand .. - I only stumbled on the /temp directory when i began rebuilding a new site to replace what I had now decided was a comprimised code base ... I started in the /temp directory of course ;) - I am sure there is a lesson here somewhere .. I think it is probably more valuable just to laugh at .. ps thanks for all the help on the last run of stupidity I had (re !#@$!#$ regular expressions posts here) happy programming!