PHP integration. It runs in the console but the web execution doesn't work HTTP ERROR 500

[lgarcia193]

I can't integrate authorize.net to my web site, charge-credit-card.php works in console but when I try to get answer from web, it doesn't work.

console:

[everasce@hs36 sdk-php]$ php PaymentTransactions/charge-credit-card.php

Successfully created transaction with Transaction ID: 60148546656
Transaction Response Code: 1
Message Code: 1
Auth Code: FYTPNJ
Description: This transaction has been approved.
[everasce@hs36 sdk-php]$

Web

Esta página no funciona

La página xxcccxx.com no puede procesar esta solicitud ahora.

HTTP ERROR 500

what should I do?

any suggestion?