Blank Page At Checkout

[mountbaldybrewing]

I recently installed a FedEx shipping module onto my site. After doing so I went to test my shopping cart and I now get a blank screen whenever I select any method of shipping. The error occurs when I press the "Continue Checkout" button after filling the cart and selecting the shipping method.

I checked my /cache files and am receiving this message:

[26-Apr-2011 17:30:11] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/content/76/6376676/html/zencart/includes/languages/english/modules/shipping/flat.php:53) in /home/content/76/6376676/html/zencart/includes/functions/functions_general.php on line 45

Does anyone have any idea what may have gone wrong and how I might go about fixing it?

My test server URL is www.mountbaldybrewing.com/zencart/.

I'm using Fedex Express and Fedex Ground v1.3 mods for the shipping modules of which I downloaded from Free Software Addons.

Thanks for any advice.

[haredo]

This should help you out:

https://www.zen-cart.com/tutorials/index.php?article=87

[mountbaldybrewing]

Thanks!

I checked out the file in question and I come up with this as far as the code goes. If you scroll through this code you'll notice a red section in this. I tried replacing this file with an older version of the file and am having the same errors.

[SCR]<?php
/**
* @package shippingMethod
* @copyright Copyright 2003-2009 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
*/
// $Id: flat.php 14498 2009-10-01 20:16:16Z ajeh $
//

class flat {
var $code, $title, $description, $icon, $enabled;

// class constructor
function flat() {
//This is where the problem is in the code according to my log files.
global $order, $db;

$this->code = 'flat';
$this->title = MODULE_SHIPPING_FLAT_TEXT_TITLE;
$this->description = MODULE_SHIPPING_FLAT_TEXT_DESCRIPTION;
$this->sort_order = MODULE_SHIPPING_FLAT_SORT_ORDER;
$this->icon = '';
$this->tax_class = MODULE_SHIPPING_FLAT_TAX_CLASS;
$this->tax_basis = MODULE_SHIPPING_FLAT_TAX_BASIS;

// disable only when entire cart is free shipping
if (zen_get_shipping_enabled($this->code)) {
$this->enabled = ((MODULE_SHIPPING_FLAT_STATUS == 'True') ? true : false);
}

if ( ($this->enabled == true) && ((int)MODULE_SHIPPING_FLAT_ZONE > 0) ) {
$check_flag = false;
$check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . MODULE_SHIPPING_FLAT_ZONE . "' and zone_country_id = '" . $order->delivery['country']['id'] . "' order by zone_id");
while (!$check->EOF) {
if ($check->fields['zone_id'] < 1) {
$check_flag = true;
break;
} elseif ($check->fields['zone_id'] == $order->delivery['zone_id']) {
$check_flag = true;
break;
}
$check->MoveNext();
}

if ($check_flag == false) {
$this->enabled = false;
}
}
}

// class methods
function quote($method = '') {
global $order;

$this->quotes = array('id' => $this->code,
'module' => MODULE_SHIPPING_FLAT_TEXT_TITLE,
'methods' => array(array('id' => $this->code,
'title' => MODULE_SHIPPING_FLAT_TEXT_WAY,
'cost' => MODULE_SHIPPING_FLAT_COST)));
if ($this->tax_class > 0) {
$this->quotes['tax'] = zen_get_tax_rate($this->tax_class, $order->delivery['country']['id'], $order->delivery['zone_id']);
}

if (zen_not_null($this->icon)) $this->quotes['icon'] = zen_image($this->icon, $this->title);

return $this->quotes;
}

function check() {
global $db;
if (!isset($this->_check)) {
$check_query = $db->Execute("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_SHIPPING_FLAT_STATUS'");
$this->_check = $check_query->RecordCount();
}
return $this->_check;
}

function install() {
global $db;
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Enable Flat Shipping', 'MODULE_SHIPPING_FLAT_STATUS', 'True', 'Do you want to offer flat rate shipping?', '6', '0', 'zen_cfg_select_option(array(\'True\', \'False\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Shipping Cost', 'MODULE_SHIPPING_FLAT_COST', '5.00', 'The shipping cost for all orders using this shipping method.', '6', '0', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, use_function, set_function, date_added) values ('Tax Class', 'MODULE_SHIPPING_FLAT_TAX_CLASS', '0', 'Use the following tax class on the shipping fee.', '6', '0', 'zen_get_tax_class_title', 'zen_cfg_pull_down_tax_classes(', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Tax Basis', 'MODULE_SHIPPING_FLAT_TAX_BASIS', 'Shipping', 'On what basis is Shipping Tax calculated. Options are<br />Shipping - Based on customers Shipping Address<br />Billing Based on customers Billing address<br />Store - Based on Store address if Billing/Shipping Zone equals Store zone', '6', '0', 'zen_cfg_select_option(array(\'Shipping\', \'Billing\', \'Store\'), ', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, use_function, set_function, date_added) values ('Shipping Zone', 'MODULE_SHIPPING_FLAT_ZONE', '0', 'If a zone is selected, only enable this shipping method for that zone.', '6', '0', 'zen_get_zone_class_title', 'zen_cfg_pull_down_zone_classes(', now())");
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Sort Order', 'MODULE_SHIPPING_FLAT_SORT_ORDER', '0', 'Sort order of display.', '6', '0', now())");
}

function remove() {
global $db;
$db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key like 'MODULE\_SHIPPING\_FLAT\_%'");
}

function keys() {
return array('MODULE_SHIPPING_FLAT_STATUS', 'MODULE_SHIPPING_FLAT_COST', 'MODULE_SHIPPING_FLAT_TAX_CLASS', 'MODULE_SHIPPING_FLAT_TAX_BASIS', 'MODULE_SHIPPING_FLAT_ZONE', 'MODULE_SHIPPING_FLAT_SORT_ORDER');
}
}
?>[/SCR]

Please let me know if you have any ideas on how to fix this one. Thanks!

[kidtwist]

i went through and did a test check out for you and everything worked fine for me. i checked out with a check. im using firefox.

to me it looks like you have an extra line in your code after your closing tag.

}
}
?>">

that extra space after the tag will cause a blank page. trust me on that. took me 3 reinstalls to figure it out and about 2 days on this forum. hope this helps

[haredo]

Keen eye Kidtwist,

After using winmerge to compare the two file this is the difference below..

function keys() {
return array('MODULE_SHIPPING_FLAT_STATUS', 'MODULE_SHIPPING_FLAT_COST', 'MODULE_SHIPPING_FLAT_TAX_CLASS', 'MODULE_SHIPPING_FLAT_TAX_BASIS', 'MODULE_SHIPPING_FLAT_ZONE', 'MODULE_SHIPPING_FLAT_SORT_ORDER');
}
}
?>">

1. delete the red font above and upload the .php file to your server..

[kidtwist]

Keen eye Kidtwist,

After using winmerge to compare the two file this is the difference below..

Quote:
function keys() {
return array('MODULE_SHIPPING_FLAT_STATUS', 'MODULE_SHIPPING_FLAT_COST', 'MODULE_SHIPPING_FLAT_TAX_CLASS', 'MODULE_SHIPPING_FLAT_TAX_BASIS', 'MODULE_SHIPPING_FLAT_ZONE', 'MODULE_SHIPPING_FLAT_SORT_ORDER');
}
}
?>">

1. delete the red font above and upload the .php file to your server..

thanks. the funny this is i have learned all my php by using zencart.

[mountbaldybrewing]

Thanks guys!

I saw the test order Kid. It took me about 4 hours yesterday and some digging to figure out where my issue was. I had to re-install a few shipping modules and delete some blank lines. I've done some programming before in the past but it's been about 10 years. Wow have things changed.

I'm glad I discovered the /cache directory though. That's super handy. Thanks Haredo.

[haredo]

Thanks for posting the solution to your fixes...

[mutinyzoo]

thanks for this. i had a similar issue and two blank lines at bottom of the language file (checkout_shipping) seemed to be the cause. just deleted in html editing program and re-uploaded.