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Add ReCaptcha to comments Wordpress
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| <?php | |
| // Add to functions.php | |
| add_action( 'wp_enqueue_scripts', 'add_recaptcha_js', 5, 1 ); | |
| function add_recaptcha_js() { | |
| // Registration reCAPTHCA api.js, version - null, in footer - false | |
| wp_register_script( 'recaptcha', 'https://www.google.com/recaptcha/api.js?hl=en', array(), null, false ); | |
| // Include reCAPTHCA api.js | |
| wp_enqueue_script( 'recaptcha' ); | |
| } | |
| add_filter('comment_form_submit_button', 'filter_comment_form_submit_button', 10, 2); | |
| function filter_comment_form_submit_button($submit_button) { | |
| /* ReCaptcha only for anonymous users | |
| global $user_ID; | |
| if (!$user_ID){ | |
| $recaptcha_site_key = 'Site Key'; | |
| echo '<div class="g-recaptcha" data-sitekey="'.$recaptcha_site_key.'"></div>'; | |
| } | |
| */ | |
| /* For all users */ | |
| $recaptcha_site_key = 'Site key'; | |
| echo '<div class="g-recaptcha" data-sitekey="'.$recaptcha_site_key.'"></div>'; | |
| $submit_before = '<div class="form-group">'; | |
| $submit_after = '</div>'; | |
| return $submit_before . $submit_button . $submit_after; | |
| } | |
| function verify_recaptcha_response() { | |
| $recaptcha_secret_key = 'Secret Key'; | |
| $recaptcha_site_key = 'Site Key'; | |
| if ( isset ( $_POST['g-recaptcha-response'] ) ) { | |
| $captcha_response = $_POST['g-recaptcha-response']; | |
| } else { | |
| return false; | |
| } | |
| // Verify the captcha response from Google | |
| $response = wp_remote_post( | |
| 'https://www.google.com/recaptcha/api/siteverify', | |
| array( | |
| 'body' => array( | |
| 'secret' => $recaptcha_secret_key, | |
| 'response' => $captcha_response | |
| ) | |
| ) | |
| ); | |
| $success = false; | |
| if ( $response && is_array( $response ) ) { | |
| $decoded_response = json_decode( $response['body'] ); | |
| $success = $decoded_response->success; | |
| } | |
| return $success; | |
| } | |
| add_action('preprocess_comment', "preprocess_comment_cb"); | |
| function preprocess_comment_cb($commentdata) { | |
| /* ReCaptcha only for anonymous users | |
| global $user_ID; | |
| if ($user_ID) { | |
| return $commentdata; | |
| } | |
| */ | |
| if ( ! verify_recaptcha_response() ) { | |
| echo '<p style="font-size: 1rem;">You are not verified reCaptcha test. Return to the <a href="#" onclick="history.go(-1);">previous page </a> and try again.'; | |
| exit; | |
| } | |
| return $commentdata; | |
| } |
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