send_receipt_func.php

function send_receipt($order_id){
		//if($new_status == 'processing' && $status != 'completed' || $new_status == 'completed' && $status == 'processing'){
		if($status != 'processing' && $status != 'completed') {
			$order = new WC_Order($order_id);
			$products = $order->get_items();

			foreach($products as $product){
				$courses_id = get_post_meta($product['product_id'], '_related_course', true);
				if($courses_id && is_array($courses_id)){
					foreach($courses_id as $cid) {
						$already_in = false;

						if(empty($order->customer_user) || empty($cid)) {
							error_log("[EMPTY] User id: " . $order->customer_user . " Course Id:" . $cid);
							return;
						}

						$meta = get_post_meta( $cid, '_sfwd-courses', true );
						$access_list = $meta['sfwd-courses_course_access_list'];
						error_log('Access List: ' .$access_list);

						if (!empty( $access_list )) {
							error_log("Access List not empty: " . $access_list);
							$access_list = explode(",", $access_list);
							foreach($access_list as $c) {
								if(trim($c) == $order->customer_user)
									$already_in = true;
							}
						}

						if (empty( $access_list ) || !$already_in) {
							error_log("Empty list or user doesn't have access yet");
							ld_update_course_access($order->customer_user, $cid, $remove = false);
							// If it's a subscription...
							if (WC_Subscriptions_Order::order_contains_subscription($order) || WC_Subscriptions_Renewal_Order::is_renewal( $order )) {
								error_log("Subscription (may be renewal) detected");
								if ($sub_key = WC_Subscriptions_Manager::get_subscription_key($order_id, $product['product_id'])) {
									error_log("Subscription key: " . $sub_key);
									$subscription_r = WC_Subscriptions_Manager::get_subscription( $sub_key );
									$start_date = $subscription_r['start_date'];
									error_log("Start Date:" . $start_date);
									update_user_meta($order->customer_user, "course_".$cid."_access_from", strtotime($start_date));
								}

							}
						}
					}
				}
			}
		}
	}