Check if the current user has an active WooCommerce subscription

active-woocommerce-subscription.php

<?php

/**
 * Check if the current user has an active subscription.
 * Redirect the user if no active subscription and the current post is a singule forum.
 * This code should not be copied and pasted as is. It is only to demonstrate the wcs_user_has_subscription() function.
 *
 * wcs_user_has_subscription( $user_id = 0, $product_id = '', $status = 'any' )
 * @param int (optional) The ID of a user in the store. If left empty, the current user's ID will be used.
 * @param int (optional) The ID of a product in the store. If left empty, the function will see if the user has any subscription.
 * @param string (optional) A valid subscription status. If left empty, the function will see if the user has a subscription of any status.
 */
add_action( 'template_redirect', 'ultimatewoo_check_user_subscriptions' );
function ultimatewoo_check_user_subscriptions() {
	$has_sub = wcs_user_has_subscription( '', '', 'active' );
	if ( ! $has_sub && is_singular( 'forum' ) ) {
		wp_redirect( get_permalink( 2626 ) );
		exit;
	}
}