Get active memberships for a user with WC Memberships

sv-wc-get-active-memberships.php

<?php 

/**
 * Helper function to get all active memberships for a user
 *
 * @param int|\WP_User $user_id Optional, defaults to current user
 * @return array - empty array|array of active memberships for the user
 */
function sv_wc_memberships_get_active_memberships( $user_id = null ) {

	if ( null === $user_id ) {
		$user_id = get_current_user_id();
	} elseif ( isset( $user_id->ID ) ) {
		$user_id = $user_id->ID;
	}

	// bail if this is user is not logged in
	if ( ! is_numeric( $user_id ) || 0 === $user_id ) {
		return array();
	} else {
		$user_id = (int) $user_id;
	}
	
	$args = array( 
		'status' => array( 'active', 'complimentary', 'pending', 'free-trial' ),
	);  

	return wc_memberships_get_user_memberships( $user_id, $args );
}