“Implementing CAPTCHA using PHP. Steps involved in this tutorial: Store the generated text in a Session variable to be used later for validation”
— Implementing CAPTCHA using PHP | eInternalseInternals, einternals.com
“CAPTCHA is used on many website to ensure that the response is not generated by computer. The term "CAPTCHA" was based upon the word capture”
— PHP Captcha Image Verification | Arie Putranto, arie.putranto.com
“Re:captcha breaks xhtml validation - Joomla! Components - RSForm! - RSJoomla! Forum”
— Re:captcha breaks xhtml validation - RSJoomla! Forum, rsjoomla.com
“Re: Captcha & Separator w/ Validation. Between phone and visitors I guess I am getting Captcha & Separator w/ Validation. Informatii forum. Statistici forum:”
— aiContactSafe ( English ) - Algis Info Grup - Software, Web, algis.ro
“[Archive] CAPTCHA and validation Code Modification and Development Questions”
— CAPTCHA and validation [Archive] - Interspire Forum, interspire.com
“Hi, I must be missed something. Before adding a captcha, my register page works fine. After adding a captcha field, once I click submit, it always s”
— Captcha validation - Yii Framework Forum, yiiframework.com
“CWD Forum " Troubleshooting " Error Messages. CAPTCHA validation error: unknown CAPTCHA session ID (NULL) (4 I've got the captcha module installed in Drupal, and I keep getting the error CAPTCHA validation error: unknown CAPTCHA session ID (NULL) in my”
— CAPTCHA validation error: unknown CAPTCHA session ID (NULL, forum.contractwebdevelopment.com
“If you need to spam protect your contact, comment or any other public form you should think about using a CAPTCHA image. A CAPTCHA image is an image with a”
— Create custom reCAPTCHA images using their API | Web, web-development-blog.com
“Adding Captcha to your Pebble blog - JavaGeek.org I started getting some spam comments on my blog a couple of weeks ago, at a steady increasing rate, which was getting very annoying. Fortunately, I found a very simple way to add captcha validation to the add comments form”
— Adding Captcha to your Pebble blog - JavaGeek.org, javageek.org
“A podcast and forum for those who design, develop and run websites. Boagworld is not just a web design CAPTCHA Validation. dannykey October 2006 Permalink. We use a CAPTCHA input on one of our sites. I know for usability its nto the best method but it does prevent spambots”
— CAPTCHA Validation - Boagworld, forum.boagworld.com