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<tr align="left">
<td class="tableb"><span class="normalfont"><b>{$lang->items['LANG_REGISTER_CODE']}</b><br /></span></td>
<td class="tableb"><br /><div class="g-recaptcha" data-sitekey="xxxxxxxxxxxxxxxxx"></div><br /></td>
</tr>

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<!-- Google reCAPTCHA v2 -->
<script src="https://www.google.com/recaptcha/api.js" async defer></script>
<!--Google reCAPTCHA -->

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/* Sicherheitscode prüfen */
/* Google reCAPTCHA v2 */
if(isset($_POST['g-recaptcha-response']) && !empty($_POST['g-recaptcha-response'])) {
//your site secret key
$secret = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
//get verify response data
$verifyResponse = file_get_contents('https://www.google.com/recaptcha/api/siteverify?secret='
.$secret.'&response='.$_POST['g-recaptcha-response']);
$responseData = json_decode($verifyResponse);
if(!$responseData->success) $error .= $lang->items['LANG_VGKONTAKTMAIL_ERROR6'];
} else {
$error .= $lang->items['LANG_VGKONTAKTMAIL_ERROR7'];
}