PHP jQuery AJAX Contact Form CAPTCHA Sample

Contact Form

CAPTCHA
Change the CAPTCHA codeSpeak the CAPTCHA code
 

Description

This code sample demonstrates the use of BotDetect Captcha in a scenario using Jquery and AJAX to validate individual form fields against a PHP server backend. The approach in this scenario is useful in situations where duplication of server-side validation routines on the client side is impractical.

Free Version Limitations

  • The free version of BotDetect includes a randomized BotDetect™ trademark in the background of 50% of all Captcha images generated.
  • It also has limited sound functionality, replacing the CAPTCHA sound with "SOUND DEMO" for randomly selected 50% of all CAPTCHA codes.
  • Lastly, the bottom 10 px of the CAPTCHA image are reserved for a link to the BotDetect website.

These limitations are removed if you upgrade your BotDetect license.