PHP Base class unable to find interfaces - php

Question

I'm using Slim and bshaffer's OAuth2.0 library to build out an API. Currently I'm trying to extend the Pdo.php class included with the OAuth library to override a few functions. However, when I try to run my code, I'm getting an error saying:
PHP Fatal error: Interface
'OAuth2\Storage\AuthorizationCodeInterface' not found
/vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/Pdo.php on line
21
Since that is the base class, and I don't want to modify it, I'm not sure how to address this issue.
Also, using the base Pdo class like so works fine, it's able to find the interfaces
$storage = new OAuth2\Storage\Pdo(array('dsn' => $dsn, 'username' => $user, 'password' => $pw));
Here is my index.php file
<?php
use League\OAuth2\Server\Storage\SessionInterface;
require '/***/root/vendor/Slim/Slim.php';
require_once('/***/root/vendor/bshaffer/oauth2-server-php/src/OAuth2/Autoloader.php');
require_once('/***/root/vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/Pdo.php');
require_once('/***/root/custom_pdo.php');
OAuth2\Autoloader::register();
\Slim\Slim::registerAutoloader();
$app = new \Slim\Slim();
$app->post(
'/token',
function () {
$dsn = 'mysql:host='.MYSQL_HOST.';dbname=DB';
$user = MYSQL_USER;
$pw = MYSQL_PASS;
$storage = new custom_pdo(array('dsn' => $dsn, 'username' => $user, 'password' => $pw));
$server = new OAuth2\Server($storage);
$server->addGrantType(new OAuth2\GrantType\ClientCredentials($storage));
$response = $server->handleTokenRequest(OAuth2\Request::createFromGlobals())->send();
print_r($response);
}
);
$app->run();
And here is my custom_pdo.php class
<?php
namespace OAuth2\Storage;
use OAuth2\OpenID\Storage\UserClaimsInterface;
use OAuth2\OpenID\Storage\AuthorizationCodeInterface as OpenIDAuthorizationCodeInterface;
require_once('/***/root/vendor/bshaffer/oauth2-server-php/src/OAuth2/Autoloader.php');
require_once('/***/root/vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/AuthorizationCodeInterface.php');
class custom_pdo extends Pdo {
}
Bshaffer Pdo class: https://github.com/bshaffer/oauth2-server-php/blob/develop/src/OAuth2/Storage/Pdo.php

Answer 1

It looks like it was a namespace issue. I wasn't calling my create object statement with the namespace, and that was causing the various issues I was running into. Here is the final code:
index.php
<?php
use League\OAuth2\Server\Storage\SessionInterface;
require '/***/root/vendor/autoload.php';
require "/***/root/custom_pdo.php";
$app = new \Slim\Slim();
$app->post(
'/token',
function () {
$dsn = 'mysql:host='.MYSQL_HOST.';dbname=DB';
$user = MYSQL_USER;
$pw = MYSQL_PASS;
$storage = new OAuth2\Storage\custom_pdo(array('dsn' => $dsn, 'username' => $user, 'password' => $pw));
$server = new OAuth2\Server($storage);
$server->addGrantType(new OAuth2\GrantType\ClientCredentials($storage));
$response = $server->handleTokenRequest(OAuth2\Request::createFromGlobals())->send();
print_r($response);
}
);
$app->run();
custom.php
<?php
namespace OAuth2\Storage;
use OAuth2\OpenID\Storage\UserClaimsInterface;
use OAuth2\OpenID\Storage\AuthorizationCodeInterface as OpenIDAuthorizationCodeInterface;
class custom_pdo extends Pdo {
}