email-spouse.php

<?php

/**
 * Add CC spouse email address
 */
add_filter( 'groundhogg/email/headers', function ( $headers = [] ){
	
	// The contact ID is not passed, so let's get it from the global
	// Check if the event queue is running, if it's not then this is not relevant...
	if ( ! \Groundhogg\Queue\Event_Queue::is_processing() ){
		return $headers;
	}
	
	$contact = \Groundhogg\Plugin::$instance->event_queue->get_current_contact();
	
	// Make sure the contact is real
	if ( ! $contact || ! $contact->exists() ){
		return $headers;
	}
	
	$spouse_email = $contact->get_meta( 'spouse_email' );
	
	// If the email address is valid add the CC header
	if ( is_email( $spouse_email ) ){
		$headers[ 'cc' ] = $spouse_email;
	}
	
	return $headers;
	
} );