The “ims_checkout_order_fields” filter is used to add additional fields to the checkout form in the checkout page.

A plugin (or theme) can modify the output with the code:

<?php add_filter( 'ims_checkout_order_fields', 'filter_function_name'); ?>

The hook is located in the image-store/_store/checkout.php file.


// Apply filter
function add_ims_checkout_order_fields( $output, $ImStoreCart, $options ) {
	return $output . '<input name="site" id="site" value="sitename" type="text" />';
add_filter('ims_checkout_order_fields', 'add_ims_checkout_order_fields');

Note:  $output is a HTML string, $ImStoreCart is the global cart object, $options is an associative array.

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