How can I debug inaccessible code in WooCommerce 3 shipping calculations?

How to Debug in WooCommerce 3

Inaccessible Code in Shipping Calculation

When developing custom shipping methods, it's crucial to understand the background process and server-side nature of these calculations. JavaScript cannot be used for debugging, as it's inaccessible in this context.

Enhanced Debugging with WC Logs and WC_Logger

Utilize the WC_Logger class for comprehensive error logging that integrates with the WooCommerce dashboard. Error logs can be conveniently accessed from WooCommerce > System Status > Logs, providing valuable insights for debugging.

To log to a WC logger (recommended):

// Initializing a WC logger
$log = new WC_Logger();
$log_entry = details of the issue or error;
$log->log( 'log-name', $log_entry );

Alternative: Debugging via WordPress WP_DEBUG Log

Alternatively, consider the WordPress WP_DEBUG Log for debugging.

a) Enable debugging by adding the following lines to wp-config.php:

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

b) Implement error_log() in your code to capture valuable data:

$variable = variable to log;
error_log( print_r( $variable, true ) );

This will generate error logs at wp-content/debug.log that can be further analyzed.

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