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==== back in stock notifications ====

We use the [[http://www.zen-cart.com/index.php?main_page=product_contrib_info&products_id=1108|Back in stock notifications]] plugin for zencart.

The plugin itself works out of the  box, and the installation instructions are easy enough to follow, but there are a few modifications to be made that we think makes it better.

==== Simple Captcha ====

We used [[http://www.phpcaptcha.org/|Securimage]], which also works quite well as advertised. 

Install Securimage somewhere on your webserver, and make these modifications to the Back in stock notifications plugin.

In **includes/modules/pages/back_in_stock_notification_subscribe/header.php** 
Line 56 Add
<code php>
include("PATH_TO_YOUR_SECURIMAGE_PHP");
$securimg = new Securimage();

$valid = $securimg->check($_POST['captcha_text']);
</code>
(Obviously, you ned to replace PATH_TO_YOUR_SECURIMAGE_PHP with your own path)

Then find Line 74
<code php>
else if (strtolower($_POST['email']) != strtolower($_POST['cofnospam'])) {
                $form_errors['cofnospam'] =
			BACK_IN_STOCK_NOTIFICATION_FORM_ERROR_EMAIL_CONFIRMATION_DOESNT_MATCH;
        }
</code>
and replace with 
<code php>
else if (strtolower($_POST['email']) != strtolower($_POST['cofnospam'])) {
                $form_errors['cofnospam'] =
			BACK_IN_STOCK_NOTIFICATION_FORM_ERROR_EMAIL_CONFIRMATION_DOESNT_MATCH;
        }
else if (!isset($_POST['captcha_text']) || $valid == false)
        {
                $form_errors['captcha'] = BACK_IN_STOCK_NOTIFICATION_FORM_ERROR_CAPTCHA;
        } 
</code>

in **includes/languages/english/backin_stock_notification_subscribe.php** add
<code php>
define('BACK_IN_STOCK_NOTIFICATION_FORM_ERROR_CAPTCHA', 'Please verify the text on the right!');
</code>

in **includes/templates/YOUR_TEMPLATE/templates/inc.html.back_in_stock_notifications.html** Add wherever you want the captcha to show up (we choose L36&L113 right afer the submit button)
<code html>
<img style="float: right;" src="securimage_show.php" />
                <ceon:if isset="captcha_error"><p class="alert"><ceon:variable name="captcha_error">Please verify the text on the right!</ceon:variable></p></ceon:if>
                <label class="inputLabel" for="captcha_label"><ceon:variable name="captcha_label">Verify text</ceon:variable>:</label>
                <input type="text" size="35" maxlength="96" name="captcha_text" />

</code>
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