<?php //A function to generate a random 4-digit code function GenerateCode() { $max = 9999; $min = 1000; $code = rand($min, $max); return $code; } //A variable to store the generated code $generatedCode = GenerateCode(); //Function to check the status of the order function CheckOrderStatus($orderId) { //Check the order status in the database //If the status is "delivered" if($orderStatus == "delivered") { return true; } else { return false; } } //Function to send the code to the customer function SendCode($generatedCode, $customerId) { //Send the code to the customer via OTT //Code sent successfully return true; } //Function to update the order status in the database function UpdateOrderStatus($orderId, $newStatus) { //Update the order status in the database //Order status updated successfully return true; } //Function to process the delivery function ProcessDelivery($orderId) { //Check the order status $orderStatus = CheckOrderStatus($orderId); //If the order is already delivered, no need to process again if($orderStatus == true) { return false; } //Generate a 4-digit code $generatedCode = GenerateCode(); //Send the code to the customer via OTT $sent = SendCode($generatedCode, $customerId); //If the code is sent successfully if($sent == true) { //Update the order status to "delivered" $updated = UpdateOrderStatus($orderId, "delivered"); //If the order status is updated successfully if($updated == true) { //Return the generated code return $generatedCode; } else { return false; } } else { return false; } } //Call the ProcessDelivery function $deliveryCode = ProcessDelivery($orderId); //If the delivery is processed successfully if($deliveryCode != false) { //Display the delivery code echo "Delivery Code: " . $deliveryCode; } else { echo "Delivery failed!"; }