[PHP] question about preventing polling for more than once

I noticed that some websites such as polldaddyhttp://polldaddy.com/account/home.php has fascinating poll service. And I am just curious about how it prevents user from polling the same poll for more than once. Or more accurately, I am a dynamic IP user. And I found that if I have polled once for a

Re: [PHP] question about preventing polling for more than once

Have you checked for any cookies left by that website? Thanks, Ash http://www.ashleysheridan.co.uk - Reply message - From: 肖晗 xiaohan2...@gmail.com Date: Fri, Nov 12, 2010 15:14 Subject: [PHP] question about preventing polling for more than once To: php-general@lists.php.net I noticed

Re: [PHP] question about preventing polling for more than once

@lists.php.net php-general@lists.php.net Date: Friday, November 12, 2010, 5:14:49 PM Subject: [PHP] question about preventing polling for more than once I noticed that some websites such as polldaddyhttp://polldaddy.com/account/home.php has fascinating poll service. And I am just curious about how