Does captcha images stored remove automatically after used?

[eluser]minttux[/eluser]
same question:
Does captcha images stored remove automatically after used?

[eluser]PravinS[/eluser]
captcha image is not stored, but it is dynamically created using script.

[eluser]boltsabre[/eluser]

captcha image is not stored, but it is dynamically created using script.

I think you will find that that is incorrect! Have a look at the official documentation located here:
http://ellislab.com/codeigniter/user-gui...elper.html

From the same page:

The "expiration" (in seconds) signifies how long an image will remain in the captcha folder before it will be deleted. The default is two hours.

So, to answer your question, yes, it does have a built in garbage collector, but no, it doesn't automatically delete them "after used".