Something strange in my session variables

PHP
1

I did not put the following into my session but just noticed that they are there right now. Can someone tell me what these are?

[securimage_code_value] => ckvyrf
[securimage_code_ctime] => 1299386024

2

Are you using any sort of CAPTCHA? If so the code value might be the word that needs to be entered by the user to pass the CAPTCHA.

3

Or it could be left over from an old session that was not destroyed which used a captcha on your site.

Depending on the browser, sessions can survive the browser window being closed and a new instance opened.