CAPTCHA: qualcuno mi potrebbe consigliare qualche libreria o script?

[Donovant]

Salve, come da titolo sto cercando una qualche libreria o script che mi consenta di generare un captcha con tutti i "contorni" (refresh captcha e audio), se possibile.

Grazie.

[RoTeam]

reCaptcha

http://www.google.com/recaptcha

[Donovant]

Qualcuno potrebbe spiegarmi come fare ad usare il reCaptcha, o nello specifico come verificare la validità dello stesso senza libreria???
La guida dice:

"This page explains how to verify a user's answer for a reCAPTCHA challenge without using a plugin. We offer a variety of plugins for different applications and programming environments, such as PHP and ASP.NET, and we encourage you to look at our multiple plugins before proceeding with the "Do-It-Yourself" (DIY) installation instructions below."

E poi

After your page is successfully displaying reCAPTCHA, you need to configure your form to check whether the answers entered by the users are correct. This is achieved by doing a POST request to http://www.google.com/recaptcha/api/verify. Below are the relevant parameters.

API Request

URL: http://www.google.com/recaptcha/api/verify

Parameters (sent via POST)
privatekey (required) Your private key
remoteip (required) The IP address of the user who solved the CAPTCHA.
challenge (required) The value of "recaptcha_challenge_field" sent via the form
response (required) The value of "recaptcha_response_field" sent via the form

Boh!?

[Santino83_02]

più chiaro di così:

https://developers.google.com/recaptcha/docs/php?hl=it

[Santino83_02]

scusa era senza l'uso della libreria... vabbeh, usa la libreria che problema c'è?

[Donovant]

Si infatti sto usando la libreria, vediamo come va...