AuthorizeNet_AIM emulator/eprocessingnetwork observer plugin problem

PHP 8.2 if that matters. USPS plugin installed.

I just upgraded to 2.0.1 so I thought I would try to reset the credit card processor and do it the right way, as I've had a variety of plugins over the years. I removed all old plugins (ceon, etc) and so just have the base authorizenet_aim plugin activated and configured.

Following directions from a comment within the plugin, it directed me to create an observer:

Code:

---

+++ includes/classes/observers/auto.authorizenet_aim.php
<?php
// An auto-loaded observer that enables switching processor to eprocessingnetwork
class zcObserverAuthorizenetAim extends base{
  public function __construct(){
    $this->attach($this, array('NOTIFY_PAYMENT_AUTHNET_MODE_SELECTION'));
  }

  public function update(&$class, $eventID, $mode, &$p2, &$p3, &$p4, &$p5, &$p6, &$p7){
    error_log(print_r($class, true) . "\neventid".print_r($eventID, true). "\np2:".print_r($p2, true)."\nmode:".print_r($mode, true));

    if($eventID != "NOTIFY_PAYMENT_AUTHNET_MODE_SELECTION")
      return;
   
    if($mode == "AIM")
        $mode = "eProcessing";
  }
}

---

The problem is that the $mode parameter is read-only (even if I add an &) and the $class->mode variable is private, so the comment in the authorizenet_aim module appears to be incorrect.

I can get it to work if I modify the core code directly:

Code:

---

Index: includes/modules/payment/authorizenet_aim.php
===================================================================
--- includes/modules/payment/authorizenet_aim.php    (revision 30655)
+++ includes/modules/payment/authorizenet_aim.php    (working copy)
@@ -619,9 +619,9 @@
    }
 
    // set URL
-    $this->mode = 'AIM';
+    $this->mode = 'eProcessing';
$this->notify('NOTIFY_PAYMENT_AUTHNET_MODE_SELECTION', $this->mode, $submit_data);

---

But, it would be nice for the notify trigger to work correctly. I don't know if the right answer is to make the mode variable public or to pass in the parameter to the notify() as a second/third parameter so then it can be edited (and if that method is done) then the switch($this->mode) below would need to be changed as well.

Yes, it was intended that using $class->mode = 'whatever' would suffice. But you're right, the fact that it's a private property breaks that. I can't find the eProcessing observer I used to do that originally, so I don't know what hoop I used to get around that before.

Three approaches you could take. All require editing the aim file though.

- instead of private declare it public, so your observer can work
- hard-code eprocessing instead of AIM, no observer required
- pass another parameter, perhaps $new_mode. First set it to null before the notify call, then pass it in the notifier (receive in observer with &), and then after the notifier check if it's non-null and set $this->mode to $new_mode (again only if not null, since the observer will update it).

Any of those will work.