Refactor code and make it more robust.

buy.php

@@ -6,42 +6,70 @@
 this for production purposes. Merchants should build their own web pages based on their needs. 
 This demo is just a guide as to what the whole process will look like.
 /*Developed by saqib 18-08-2009*/
+/*Updated by nikunjkotecha 04-12-2017*/
 -->
-<?php 
+<?php
 ob_start();
+session_start();
 ini_set("display_errors", "1");
 error_reporting(E_ALL);
-
-	require_once "com/aciworldwide/commerce/gateway/plugins/e24PaymentPipe.inc.php" ;
-	$Pipe = new e24PaymentPipe;
-
-   $Pipe->setAction(1);
-   $Pipe->setCurrency(414);
-   $Pipe->setLanguage("ENG"); //change it to "ARA" for arabic language
-   $Pipe->setResponseURL("https://www.knetpaytest.com.kw/php/response.php"); // set your respone page URL
-   $Pipe->setErrorURL("https://www.knetpaytest.com.kw/php/error.php"); //set your error page URL
-   $Pipe->setAmt("10"); //set the amount for the transaction
-   //$Pipe->setResourcePath("/Applications/MAMP/htdocs/php-toolkit/resource/");
-   $Pipe->setResourcePath("D:\\php\\resource\\"); //change the path where your resource file is
-   $Pipe->setAlias("alias"); //set your alias name here
-   $Pipe->setTrackId("3434");//generate the random number here
-
-   $Pipe->setUdf1("UDF 1"); //set User defined value
-   $Pipe->setUdf2("UDF 2"); //set User defined value
-   $Pipe->setUdf3("UDF 3"); //set User defined value
-   $Pipe->setUdf4("UDF 4"); //set User defined value
-   $Pipe->setUdf5("UDF 5"); //set User defined value
-
-            //get results
-		if($Pipe->performPaymentInitialization()!=$Pipe->SUCCESS){
-				echo "Result=".$Pipe->SUCCESS;
-				echo "<br>".$Pipe->getErrorMsg();
-				echo "<br>".$Pipe->getDebugMsg();
-			//header("location: https://www.yourURL.com/error.php");
-		}else {
-			$payID = $Pipe->getPaymentId();
-            $payURL = $Pipe->getPaymentPage();
-			echo $Pipe->getDebugMsg();
-			//header("location:".$payURL."?PaymentID=".$payID);
-		}
-?>
+
+require_once "com/aciworldwide/commerce/gateway/plugins/e24PaymentPipe.inc.php";
+$pipe = new e24PaymentPipe();
+
+$pipe->setAction(KNET_ACTION_PURCHASE);
+$pipe->setCurrency(KNET_CURRENCY_KWD);
+$pipe->setLanguage(KNET_LANGUAGE_EN);
+
+// Set your respone page URL. This needs to be available on internet.
+// If using HTTPS, it needs to be a valid SSL certificate communicated
+// to K-Net.
+$pipe->setResponseURL("https://www.knetpaytest.com.kw/php/response.php");
+
+// Set your error page URL.
+$pipe->setErrorURL("https://www.knetpaytest.com.kw/php/error.php");
+
+//$pipe->setResourcePath("/Applications/MAMP/htdocs/php-toolkit/resource/");
+$pipe->setResourcePath("D:\\php\\resource\\"); //change the path where your resource file is
+
+// Set your alias name here.
+$pipe->setAlias("alias");
+
+// Set the amount for the transaction.
+$pipe->setAmt("10");
+
+// Random / unique - internal tracking id.
+$pipe->setTrackId("3434");
+
+//set User defined values. This will be returned back in response url.
+$pipe->setUdf1("UDF 1");
+$pipe->setUdf2("UDF 2");
+$pipe->setUdf3("UDF 3");
+$pipe->setUdf4("UDF 4");
+$pipe->setUdf5("UDF 5");
+
+try {
+  $pipe->performPaymentInitialization();
+
+  // Check again once if there is any error.
+  if ($error = $pipe->getErrorMsg()) {
+    throw new \RuntimeException($error);
+  }
+
+  // Store payment id somewhere in the system to validate later.
+  $_SESSION['payment_id'] = $pipe->getPaymentId();
+
+  header("location:" . $pipe->getRedirectUrl());
+  exit;
+}
+catch (\Exception $e) {
+  // Log message somewhere.
+  error_log($e->getMessage());
+
+  // For demo we print here only.
+  echo "Result=" . $pipe->SUCCESS;
+  echo "<br>" . $pipe->getErrorMsg();
+  echo "<br>" . $pipe->getDebugMsg();
+  //header("location: https://www.yourURL.com/error.php");
+  exit;
+}