----- Original Message ----- From: "Marian Briones" And today's task is...
I"m doing a site that allows everyone one free sweepstakes entry. How can I control that? I thought of using the env variable that has the IP address but if there are multiple users behind a firewall, that would prevent more than one person behind that firewall from entering. Suggestions? Gotta get this done.... ------------------------------ There is no way of doing this with certainty. Most of the environment variables come from the browser so they can be faked. The only one that can reasonable be relied on is the IP address. Cookies can help restrict entries from one PC but many disable cookies. The e-mail suggestion is the better one but as was said by Gordon Stewart, people can have multiple addresses. The one thing you really do need be careful about is bots that may auto register. You need to have some method of weeding out the bots by having a step in the process that requires human intervention such as the box to enter the text from an image that is often seen on forums. Without this step you may find that one user creates a bot that completes thousands of entries. Hope this helps, Rob. Community email addresses: Post message: [email protected] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED] Shortcut URL to this page: http://groups.yahoo.com/group/php-list Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/php-list/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/php-list/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
