Google reCAPTCHA on register page

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<?php if ($site_key) { ?>
            <div class="form-group">
              <div class="col-sm-offset-2 col-sm-10">
                <div class="g-recaptcha" data-sitekey="<?php echo $site_key; ?>"></div>
                <?php if ($error_captcha) { ?>
                  <div class="text-danger"><?php echo $error_captcha; ?></div>
                <?php } ?>
              </div>
            </div>
<?php } ?>

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$data['breadcrumbs'][] = array(
	'text' => $this->language->get('heading_title'),
	'href' => $this->url->link('information/contact')
);

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if (isset($this->error['captcha'])) {
		$data['error_captcha'] = $this->error['captcha'];
	} else {
		$data['error_captcha'] = '';
}

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if ($this->config->get('config_google_captcha_status')) {
	$this->document->addScript('https://www.google.com/recaptcha/api.js');
		$data['site_key'] = $this->config->get('config_google_captcha_public');
	} else {
		$data['site_key'] = '';
}

Code: Select all

if ($this->config->get('config_google_captcha_status')) {
		$recaptcha = file_get_contents('https://www.google.com/recaptcha/api/siteverify?secret=' . urlencode($this->config->get('config_google_captcha_secret')) . '&response=' . $this->request->post['g-recaptcha-response'] . '&remoteip=' . $this->request->server['REMOTE_ADDR']);
		$recaptcha = json_decode($recaptcha, true);
	if (!$recaptcha['success']) {
		$this->error['captcha'] = $this->language->get('error_captcha');
	}
}