# General OAuth2-Client

To use this general OAuth2 client-class, include it with
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```
	require_once('OAuth2Client.php'); 
	$oauth2 = new OAuth2([
		"client_id" 		 => $client_id,
		"client_secret" 	 => $client_secret,
		"redirect_uri" 		 => $redirect_uri, 
		"auth" 				 => $auth, 
		"token" 			 => $token,
		"authorization_type" => $authorization_type, 
		"session" 			 => $session, 
		"verify" 			 => $verify, 
		"grant_type" 		 => $grant_type, 
		"response_type" 	 => $response_type 
	]);
```

```(string) $client_id``` is client id of the OAuth2 application
```(string) $client_secret``` is client secret of the OAuth2 application
```(string) $redirect_uri``` is the specified redirect-uri for the OAuth2 application
```(string) $auth``` is the full url for authorization
```(string) $token``` is the full token url

Optional - 

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```(string) $authorization_type``` defaults to Bearer
```(boolean) $session``` specifies whether the state is to be saved in _SESSION storage, defaults to false
```(boolean) $verify``` is whether to verify SSL of host and peer, defaults to true
```(string) $grant_type``` defaults to 'authorization_code'
```(string) $response_type``` defaults to 'code'


To start the redirect phase

```$oauth2->redirect($state);```

($state defaults to false)


To get access token

```$oauth2->get_access_token();```

returns the access_token.

(Optional value is $state, to check up against _SESSION variables)


To get identity

```$oauth->get_identity($access_token, $user_url);```

```(string) $user_url``` is the endpoint for fetching info, example: https://auth.dataporten.no/userinfo

returns the identity-object as returned from the OAuth2-provider.