Is there any way to add captcha into my custom form in WordPress, i have gone through some plugins but it allows only to add Captcha in login, comment forms etc..
i have used Google reCaptcha where i have used this script
<script type="text/javascript"
src="http://www.google.com/recaptcha/api/challenge?k=your_public_key">
</script>
<noscript>
<iframe src="http://www.google.com/recaptcha/api/noscript?k=your_public_key"
height="300" width="500" frameborder="0"></iframe><br>
<textarea name="recaptcha_challenge_field" rows="3" cols="40">
</textarea>
<input type="hidden" name="recaptcha_response_field"
value="manual_challenge">
</noscript>
it’s working fine on contact page but if i click on submit it’s not validated what code should i place in contact page so, that it works with validation.
You need to be checking for validation of the answer and not just displaying the block with the captcha challenge.
https://web.archive.org/web/20121108134349/https://developers.google.com/recaptcha/docs/php