Multiple BotDetect CAPTCHAs PHP Sample

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PHP CAPTCHA validation
CAPTCHA
Change the CAPTCHA codeSpeak the CAPTCHA code
 

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Description

This sample project shows how to have multiple Captcha-protected pages within the same PHP website.

As long as the Captcha instances have different names (Page1Captcha and Page2Captcha in the sample), they can have completely separate settings and won't interfere with each other's validation.

Even if a user opens the same page in multiple browser tabs, each tab will properly validate the shown Captcha code.

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.