Add phpcaptcha in contact form 7 with validation in WordPress which you can download from below w3schools website.

PHP Captcha

1. Extract phptextcaptcha in your theme directory of wordpress.

your directory will be like.


where captcha.php path will be generating an image and put the value of it session $_SESSION[‘captcha_code’];

2. In contact form you need to put

you can further style this with css.

3. Now last part is validating this with contact form 7.

put the code in function.php