PHP callback URL is not including ?a=complete

Question

I am trying to change the call back URL from one URL to another. Current callback URL is

header("Location: ".$gatewayParams['systemurl']."/viewinvoice.php?id=" . $merchant_order_id);

I wanted to change the URL to https://example.com/cart.php?a=complete When I tried replacing /viewinvoice.php?id= with /cart.php?a=complete I am getting redirected to https://example.com/cart.php, and the ?a=complete gets stripped.

Can someone tell me the way to reach https://example.com/cart.php?a=complete

Please Note: 1. I am not a PHP developer, so if you are suggesting something, kindly provide a full code snippet. 2. My goal is to redirect the user to the 'https://example.com/cart.php?a=complete'. It is Okay to make it hardcoded if it needs programmatic logic. 3. Please find the actual use case here

I found that if I can get this callback URL fixed, then it will solve my problem

just store it into a $_GET['variable'] variable before calling the header function and access it on viewinvoice.php — popeye
– popeye, Commented Sep 26, 2018 at 8:29
Note that some browsers like to hide those parameters from the url until you click the address bar. Maybe that is what's happening? — Dirk Scholten
– Dirk Scholten, Commented Sep 26, 2018 at 8:31
Possible duplicate of php redirect with HTTP query string variables — Alex Shesterov
– Alex Shesterov, Commented Sep 26, 2018 at 8:35
No @DirkScholten it is just an issue with the call back URL based on some criteria. I will edit the question to provide much more insight. — Jafar Muhammed
– Jafar Muhammed, Commented Sep 26, 2018 at 8:36
Do you really try to redirect to example.com or are you using your own domain? It's possible that the redirect works from PHP, but the query is "stripped" by the website settings. — Alex Shesterov
– Alex Shesterov, Commented Sep 26, 2018 at 8:43

AliRazaGhori · Accepted Answer · 2018-09-26 08:35:28Z

0

You should try the following

$callback_url = $gatewayParams['systemurl']."/viewinvoice.php?id=" . $merchant_order_id;
$callback_url = str_replace('/viewinvoice.php?id=', '/cart.php?a=complete', $callback_url);
header("Location: ".$callback_url);

answered Sep 26, 2018 at 8:35

AliRazaGhori

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1 Comment

Jafar Muhammed Over a year ago

Hi @AliRazaGhori, the same thing happening here. ?a=complete is not added to the URL

popeye · Accepted Answer · 2018-09-26 09:39:09Z

0

Not sure what exactly are you trying to do. Anyhow, if I were to redirect via header function to a URL with some extra params. I'd put it into a GET variable. So, if an http request comes to example.php

// example.php
<?php
$merchant_id = 123;
$_GET['merchant_id'] = $merchant_id;
header('Location: invoice.php');

And, in invoice.php

// invoice.php
if( isset($_GET['merchant_id']) ) {
  $merchant_id = $_GET['merchant_id'];
  unset($_GET['merchant_id']);
}

answered Sep 26, 2018 at 9:39

popeye

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