Add reCaptcha to your Drupal 7 forms programatically

If you want to add Google's reCaptcha (https://www.google.com/recaptcha/intro/index.html) to your Drupal 7 forms programmatically you need to follow these two steps:

1) Install and enable captcha (https://www.drupal.org/project/captcha) and recaptcha (https://www.drupal.org/project/recaptcha) modules. The best way to do this is to use drush: drush en -y recaptcha

2) Add this snippet to any Drupal form's code you wish to have this captcha on:

$form['captcha'] = array(
  '#type' => 'captcha',
  '#captcha_type' => 'recaptcha/reCAPTCHA',
);

And you're done! I hope from now on, spam bots will bother you less.

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