Modify cart items sort order

Changes the sort order of order items on shopping carts, which when saved saves to the admin edit screen and email notifications as well.

// Sort Cart Items
add_action( 'woocommerce_cart_loaded_from_session', function() {

	// Get Cart Items
	$cart_items = WC()->cart->get_cart_contents();

	// Only For Two Plus
	if( count( $cart_items ) < 2 ) {
		return;
	}

	// Get Sorting BY Job And Room
	$sorting = [];
	foreach( $cart_items as $item_id => $item ) {
		$sorting[] = wc_get_order_item_meta(
			$item_id, 'CustomFieldName', true
		);
	}
	array_multisort( $locations, SORT_ASC, $sorting );

	// Apply To Cart Session
	WC()->cart->cart_contents = $cart_items;

} );

How to use

  1. Log into a staging, development, or locally hosted clone of your site
  2. Install and activate Code Snippets
  3. WP Admin > Snippets > Add New
  4. Copy and paste the code from the Description tab above
  5. Check to ensure formatting came over properly and no syntax errors show up in the editor
  6. Customize the code as desired
  7. Add a meaningful title
  8. Select whether to run on front-end or back-end (or both)
  9. Click “Save and Activate”
  10. Test your site to ensure it works
  11. Disable if any problems, or recover
  12. Repeat for live environment

License

All code snippets are licensed GPLv2 (or later) matching WordPress licensing.

Disclaimer of warranty:

Except when otherwise stated in writing the copyright holders and/or other parties provide the program as-is without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

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