reCAPTCHA with PHP

I’ve seen in many sites the reCAPTCHA plugin and I’ve particular focus to it specially since Google acquired the company. Today I’ve tested the system in my personal site… I was getting quite a few spam messages! The system is very simple to use and the code is pretty straightforward. I have everything on PHP so it was quite easy add the reCAPTCHA library and methods the existing contact form. Here’s the tutorial: Register for a key at reCAPTCHA Download the PHP library Put the following code in the form where you want the CAPTCHA to appear <?php require_once(‘recaptchalib.php’); $publickey = “<your public key>”; echo recaptcha_get_html($publickey); ?> Add the following code to the form validation…

LinkIntegrator: A Link-based Data Integration Architecture

Pedro Lopes, Joel Arrais and José Luís Oliveira International Conference on Knowledge Discovery and Information Retrieval, Institute for Systems and Technologies of Information, Control and Communication (KDIR, IC3K 2009) Madeira, Portugal, October 2009 [http://issuu.com/pedrolopes/docs/linkintegrator]

Arabella: A Topic Driven Web Crawler

Pedro Lopes, David Campos, Carlos Davide Pinto and José Luís Oliveira International Conference on Knowledge Discovery and Information Retrieval, Institute for Systems and Technologies of Information, Control and Communication (KDIR, IC3K 2009) Madeira, Portugal, October 2009 [http://issuu.com/pedrolopes/docs/arabella]