Graph API Get all photos - php

Question

i have a website where people can upload pictures to be rated/liked etc. I am developing a function where if they don't want to upload pictures they can import them from there Facebook account.
I can login/logout the user from Facebook using the PHP Graph API but i am not sure on the request i need to get the logged in persons photos. I have setup the login url to the user_photos permissions.
I had a feature like this a few years ago where i would use the FQL to query the images but now i am using the new Facebook v4 Graph API.
Any help will be appreciated.
FacebookSession::setDefaultApplication( 'ID', 'SECRET' );
$helper = new FacebookRedirectLoginHelper('URL');
$permissions = array(
'user_photos'
);
try {
if ( isset( $_SESSION['access_token'] ) ) {
// Check if an access token has already been set.
$session = new FacebookSession( $_SESSION['access_token'] );
} else {
// Get access token from the code parameter in the URL.
$session = $helper->getSessionFromRedirect();
}
} catch( FacebookRequestException $ex ) {
// When Facebook returns an error.
print_r( $ex );
} catch( \Exception $ex ) {
// When validation fails or other local issues.
print_r( $ex );
}
if ( isset( $session ) ) {
// Retrieve & store the access token in a session.
$_SESSION['access_token'] = $session->getToken();
// Logged in
echo 'Successfully logged in!';
} else {
// Generate the login URL for Facebook authentication.
$loginUrl = $helper->getLoginUrl($permissions);
echo 'Login';
}

Answer 1

After user has made the login you can get photos like so:
FacebookSession::setDefaultApplication($APP_ID, $APP_SECRET);
$session = new FacebookSession($access_token);
$response = (new FacebookRequest($session, 'GET', '/me/photos?fields=source&limit=100'))->execute();
$object = $response->getGraphObject();
$arr = self::convertToAssoc($object);
put in the limit param your value.
here is how you convert the facebook-object:
public static function convertToAssoc($graphObject){
$arr = $graphObject->asArray();
if ( !array_key_exists('data', $arr) ){
$arr['data'] = '';
}
$arr_data = $arr['data'];
$data = [];
foreach($arr_data as $item){
$data[] = get_object_vars($item);
}
return $data;
}