Date: 08/11/05 (Web Development)    Keywords: php

I am using the directions here http://www.evolt.org/article/comment/17/60265/ to create a php log in for this survey I am doing. What I need is for at the end of the survey, the last question will be a privacy agreement and something stating that the log in they used will become invalid once they submit. So when they submit the answers, I need to have their username locked. Any ideas?

Source: http://www.livejournal.com/community/webdev/233461.html