Extract Transaction's Customer Info to be written to a file?

[zcnb]

Well, I haven't solved the mystery yet, but I can already admit to one conceptual mistake: I forgot to read the source code (and relied, instead, on documentation and existing threads in the Zen Cart forums).

Also, so that I can save other beginners from the same syntax mistake, the correct syntax for accessing the $orders->field[] array elements is $orders->fields['customers_name'], not $orders->fields[customers_name] (long live single quotes...)

Fixing this syntax mistake didn't help, of course, because IMHO my problem lies within the scope/lifetime of the objects I am trying to "snatch".

In the meanwhile, I am providing here a snapshot of the my partially working solution, along with what actually gets written to the file:

includes\auto_loaders\config.writeCustInfo.php:

<?php

$autoLoadConfig[90][] = array('autoType'=>'class',
                              'loadFile'=>'observers/class.writeCustInfo.php');
$autoLoadConfig[90][] = array('autoType'=>'classInstantiate',
                              'className'=>'writeCustInfo',
                              'objectName'=>'writeCustInfo');

?>

includes\classes\observers\class.writeCustInfo.php:

<?php
/**
 * Observer class to write customer info to a temp file.
 */
class writeCustInfo extends base {

 /**  constructor method !
   * 
   * Attach observer class to the global $zco_notifier and watches for a single notifier event.
   */
  function writeCustInfo() {
    global $zco_notifier;
    $zco_notifier->attach($this, array('NOTIFY_CHECKOUT_PROCESS_AFTER_SEND_ORDER_EMAIL'));
  }

 /**   Actual Method that writes customer info to file
   * 
   * Called by observed class when any of the notifiable events occur
   *
   * @param object $class
   * @param string $eventID
   */
  function update(&$class, $eventID) {
    $myFile = "testFile.txt";
    $fh = fopen($myFile, 'a') or die("can't open file");

    /**
    * Write the following fields to a file
    */
    $stringData = "This is the first line of ";
    $stringData = $stringData . $myFile;
    fwrite($fh, $stringData);
    fwrite($fh, "\r\n");
    
    $customerInfo = "Customer Information: \r\n";
    $customerInfo = $customerInfo . $myFile;
    $customerInfo = $customerInfo . $order->fields['customers_name'];
    $customerInfo = $customerInfo . $order->fields['customers_company'];
    $customerInfo = $customerInfo . $order->fields['customers_street_address'];
    fwrite($fh, $customerInfo);
    fwrite($fh, "\r\n");

    fclose($fh);    
  }
}
?>

The output, in testFile.txt:

This is the first line of testFile.txt
Customer Information:
testFile.txt

I will post here the complete solution, once I have it. But if you notice any gross mistake in my code that could explain the mystery, that would help me post the solution faster.

Thanks,
Daniel