Sample Email Template Tag

/**

 * Register a custom email tag.

 *

 * Uses edd_add_email_tag(). See includes/emails/tags.php for full parameter documentation.

 *

 * @return void

 */

function eddwp_add_sample_email_tag() {

	edd_add_email_tag(

		'custom_email_tag',

		__( 'This tag will display the currency of the order.', 'your-text-domain' ),

		'eddwp_render_sample_email_tag',

		__( 'Custom Email Tag', 'your-text-domain' ),

		array( 'order' ),

		array( 'customer' )

	);

}

add_action( 'edd_add_email_tags', 'eddwp_add_sample_email_tag' );

/**

 * Render the custom email tag.

 *

 * Callback signature matches EDD core: ( object_id, email_object, context_or_email ).

 * The third parameter is either \EDD\Emails\Types\Email or the context string; use get_context() to normalize.

 *

 * @param int                            $object_id        The object ID (e.g. order ID).

 * @param mixed|null                     $email_object     The email object (order, user, etc.). May be null.

 * @param string|\EDD\Emails\Types\Email $context_or_email The context string ( order, license, user, etc.) or the email type instance.

 * @return string

 */

function eddwp_render_sample_email_tag( $object_id, $email_object = null, $context_or_email = 'order' ) {

	$context = EDD()->email_tags->get_context( $context_or_email );

	if ( 'order' !== $context ) {

		return __( 'This is not an order email.', 'your-text-domain' );

	}

	if ( ! $email_object instanceof \EDD\Orders\Order ) {

		$email_object = edd_get_order( $object_id );

	}

	if ( ! $email_object instanceof \EDD\Orders\Order ) {

		return '';

	}

	return $email_object->currency;

}