redirect failure issue

application/controllers/Api.php

@@ -496,13 +496,13 @@ class Api extends CI_Controller {
   }
 
   public function paymentSuccessUrl(){
-    if(isset($_REQUEST['responseParameter']) && !empty($_REQUEST['responseParameter']) && 
-       !empty($response = explode("||",$_REQUEST['responseParameter'])) && !isset($_POST['txnErrMsg'])){
-      
     $settings   = getSettings();
     $iv         = $settings['merchant_iv'];
     $mKey       = $settings['merchant_key'];
     $redUrl     = $settings['web_base_url'];
+    if(isset($_REQUEST['responseParameter']) && !empty($_REQUEST['responseParameter']) && 
+       !empty($response = explode("||",$_REQUEST['responseParameter'])) && 
+       !isset($_POST['txnErrMsg'])){
       
       if(!isset($response[1]) || empty($response[1])){
         redirect($redUrl.'failure');