Using class observers

Hi,

I am rebuilding my old site from zen v1.54 to 1.5.5f. My php is v5.6.32 (unchanged from v1.54).

I used to use the "real world example" in the wiki here. I have simply copied the files from my old installation to the new. Unfortunately that didn't work! :no: Now, when I add anything to the cart I get a blank page, if I restore the session the item wasn't added and no free gift!

Here is what I have had working well in v1.54

File 1 - catalogue/includes/auto_loaders/config.freeProduct.php

Code:

<?php /** * Observer class used to add a free product to the cart if the user spends more than $x * */ $autoLoadConfig[10][] = array('autoType'=>'class', 'loadFile'=>'observers/class.freeProduct.php'); $autoLoadConfig[90][] = array('autoType'=>'classInstantiate', 'className'=>'freeProduct', 'objectName'=>'freeProduct'); ?>

File 2 - catalogue/includes/classes/observers/class.freeProduct.php

Code:

<?php /** * Observer class used to add a free product to the cart if the user spends more than $x * */ class freeProduct extends base { /** * The threshold amount the customer needs to spend. * * Note this is defined in the shops base currency, and so works with multi currency shops * * @var decimal */ var $freeAmount = 15.01; /** * The id of the free product. * * Note. This must be a true free product. e.g. price = 0 Also make sure that if you don't want the customer * to be charged shipping on this, that you have it set correctly. * * @var integer */ var $freeProductID = 239; /** * constructor method * * Attaches our class to the $_SESSION['cart'] class and watches for 2 notifier events. */ function freeProduct() { $_SESSION['cart']->attach($this, array('NOTIFIER_CART_ADD_CART_END')); $_SESSION['cart']->attach($this, array('NOTIFIER_CART_REMOVE_END')); } /** * Update Method * * Called by observed class when any of our notifiable events occur * * @param object $class * @param string $eventID */ function update(&$class, $eventID, $paramsArray) { if ($_SESSION['cart']->show_total() >= $this->freeAmount && !$_SESSION['cart']->in_cart($this->freeProductID) ) { $_SESSION['cart']->add_cart($this->freeProductID); $_SESSION['freeProductInCart'] = TRUE; } if ($_SESSION['cart']->show_total() < $this->freeAmount && $_SESSION['cart']->in_cart($this->freeProductID) ) { $_SESSION['cart']->remove($this->freeProductID); } if ($_SESSION['cart']->in_cart($this->freeProductID)) { $_SESSION['cart']->contents[$this->freeProductID]['qty'] = 1; } } } ?>

What has changed in zen 1.55f? Anyone any clues what I have missed?

Error log:

Code:

[29-Jun-2018 04:01:51 Europe/London] Request URI: /dev/final/index.php?main_page=index&cPath=5&sort=20a&action=buy_now&products_id=18&zenid=cc7772d2edee84f77ab054932ac38a63, IP address: 84.84.84.84 #1 session_start() called at [/home/#######/public_html/dev/final/includes/functions/sessions.php:107] #2 zen_session_start() called at [/home/#######/public_html/dev/final/includes/init_includes/init_sessions.php:86] #3 require(/home/#######/public_html/dev/final/includes/init_includes/init_sessions.php) called at [/home/#######/public_html/dev/final/includes/autoload_func.php:48] #4 require(/home/#######/public_html/dev/final/includes/autoload_func.php) called at [/home/#######/public_html/dev/final/includes/application_top.php:170] #5 require(/home/#######/public_html/dev/final/includes/application_top.php) called at [/home/#######/public_html/dev/final/index.php:26] [29-Jun-2018 04:01:51 Europe/London] PHP Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/#######/public_html/dev/final/includes/auto_loaders/config.freeProduct.php:11) in /home/#######/public_html/dev/final/includes/functions/sessions.php on line 107 [29-Jun-2018 04:01:51 Europe/London] Request URI: /dev/final/index.php?main_page=index&cPath=5&sort=20a&action=buy_now&products_id=18&zenid=cc7772d2edee84f77ab054932ac38a63, IP address: 84.84.84.84 #1 session_start() called at [/home/#######/public_html/dev/final/includes/functions/sessions.php:107] #2 zen_session_start() called at [/home/#######/public_html/dev/final/includes/init_includes/init_sessions.php:86] #3 require(/home/#######/public_html/dev/final/includes/init_includes/init_sessions.php) called at [/home/#######/public_html/dev/final/includes/autoload_func.php:48] #4 require(/home/#######/public_html/dev/final/includes/autoload_func.php) called at [/home/#######/public_html/dev/final/includes/application_top.php:170] #5 require(/home/#######/public_html/dev/final/includes/application_top.php) called at [/home/#######/public_html/dev/final/index.php:26] [29-Jun-2018 04:01:51 Europe/London] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/#######/public_html/dev/final/includes/auto_loaders/config.freeProduct.php:11) in /home/#######/public_html/dev/final/includes/functions/sessions.php on line 107 [29-Jun-2018 04:01:51 Europe/London] Request URI: /dev/final/index.php?main_page=index&cPath=5&sort=20a&action=buy_now&products_id=18&zenid=cc7772d2edee84f77ab054932ac38a63, IP address: 84.84.84.84 #1 header() called at [/home/#######/public_html/dev/final/includes/init_includes/init_templates.php:78] #2 require(/home/#######/public_html/dev/final/includes/init_includes/init_templates.php) called at [/home/#######/public_html/dev/final/includes/autoload_func.php:48] #3 require(/home/#######/public_html/dev/final/includes/autoload_func.php) called at [/home/#######/public_html/dev/final/includes/application_top.php:170] #4 require(/home/#######/public_html/dev/final/includes/application_top.php) called at [/home/#######/public_html/dev/final/index.php:26] [29-Jun-2018 04:01:51 Europe/London] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/#######/public_html/dev/final/includes/auto_loaders/config.freeProduct.php:11) in /home/#######/public_html/dev/final/includes/init_includes/init_templates.php on line 78 [29-Jun-2018 04:01:51 Europe/London] Request URI: /dev/final/index.php?main_page=index&cPath=5&sort=20a&action=buy_now&products_id=18&zenid=cc7772d2edee84f77ab054932ac38a63, IP address: 84.84.84.84 #1 header() called at [/home/#######/public_html/dev/final/includes/functions/functions_general.php:46] #2 zen_redirect() called at [/home/#######/public_html/dev/final/includes/classes/shopping_cart.php:2030] #3 shoppingCart->actionBuyNow() called at [/home/#######/public_html/dev/final/includes/main_cart_actions.php:49] #4 require(/home/#######/public_html/dev/final/includes/main_cart_actions.php) called at [/home/#######/public_html/dev/final/includes/init_includes/init_cart_handler.php:44] #5 require(/home/#######/public_html/dev/final/includes/init_includes/init_cart_handler.php) called at [/home/#######/public_html/dev/final/includes/autoload_func.php:48] #6 require(/home/#######/public_html/dev/final/includes/autoload_func.php) called at [/home/#######/public_html/dev/final/includes/application_top.php:170] #7 require(/home/#######/public_html/dev/final/includes/application_top.php) called at [/home/#######/public_html/dev/final/index.php:26] [29-Jun-2018 04:01:51 Europe/London] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/#######/public_html/dev/final/includes/auto_loaders/config.freeProduct.php:11) in /home/#######/public_html/dev/final/includes/functions/functions_general.php on line 46

Honestly, any suggestions appreciated.

Oh yeah, if I remove the two files config.freeProduct.php & class.freeProduct.php the errors stops immediately!