How to add app url

[apatuka]

Hello, i creatd an app but i dont know where to add Api URL because i have this error:

Oauth error invalid_request: The redirect_uri and application url must have matching hosts

And this is my code:

<?php
require('vendor/autoload.php');

$config = array(
'ShopUrl' => '*******',
'ApiKey' => '*******',
'Password' => '*******',
'Curl' => array(
CURLOPT_TIMEOUT => 10,
CURLOPT_FOLLOWLOCATION => true
)
);

PHPShopify\ShopifySDK::config($config);

$scopes = 'read_products,write_products';
$redirectUrl = 'http://localhost:81/shopify/app.php';
\PHPShopify\AuthHelper::createAuthRequest($scopes, $redirectUrl);
?>

Can you provide me help or a detailed tutorial how to achieve this ?

Thank you

[garyrgilbert]

You can't use localhost as your redirectURL.  If you are developing on your local machine you need to either use NGROK or Localtunnel to act as a passthrough to your local host.

Cheers,

Gary