[PHP] question about preventing polling for more than once

2010-11-12 Thread 肖晗
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 certain poll
and after some time, I changed my IP when I got connected to the Internet
again, I cannot poll the previous one for the second time. So I am confused
how polldaddy http://polldaddy.com/account/home.php can figure out that I
have polled even if I had changed my IP. Is there any way to achieve that?

Thanks in advance.


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

2010-11-12 Thread a...@ashleysheridan.co.uk
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 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 certain poll
and after some time, I changed my IP when I got connected to the Internet
again, I cannot poll the previous one for the second time. So I am confused
how polldaddy http://polldaddy.com/account/home.php can figure out that I
have polled even if I had changed my IP. Is there any way to achieve that?

Thanks in advance.


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

2010-11-12 Thread Andre Polykanine
Hello ??,

Try to clean up your cookies. Maybe they set a cookie on your
computer.
-- 
With best regards from Ukraine,
Andre
Skype: Francophile
Twitter: http://twitter.com/m_elensule
Facebook: http://facebook.com/menelion

- Original message -
From: ?? xiaohan2...@gmail.com
To: php-general@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 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 certain poll
and after some time, I changed my IP when I got connected to the Internet
again, I cannot poll the previous one for the second time. So I am confused
how polldaddy http://polldaddy.com/account/home.php can figure out that I
have polled even if I had changed my IP. Is there any way to achieve that?

Thanks in advance.


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