This will allow me to get the data that I need to customize the login page. But i am scared to keep clientID and clientSecret in a page accessible to the world. The page is a .php page, so you said I might be OK with it having the clientSecret in it.

Ah, you should pull that value from the environment (if you are deploying via heroku) or AWS secrets manager (if deploying to AWS) or some other secured manner. I'm not sure how you are hosting the app, but you can ask your hosting provider how they recommend storing app secrets.

'message' => 'Your request is missing the Registration information as JSON in the entity-body.',

If you want to register a user, you need to provide a registration key. That's what the error message is telling you.

I find it helpful to pull up the API documentation and look at the sample request and response JSON docs. That's what FusionAuth is expecting, and all the client libs do is wrap that up in a nice, language specific interface.

HTH.

$provider = new \League\OAuth2\Client\Provider\GenericProvider([
'clientId' => $client_id,
'clientSecret' => $client_secret,
'redirectUri' => $redirect_uri,
'urlAuthorize' => $fa_url.'/oauth2/authorize',
'urlAccessToken' => $fa_url.'/oauth2/token',
'urlResourceOwnerDetails' => $fa_url.'/oauth2/userinfo'
]);

$accessToken = $provider->getAccessToken('authorization_code', ['code' => $_GET['code']]);

This will allow me to get the data that I need to customize the login page. But i am scared to keep clientID and clientSecret in a page accessible to the world. The page is a .php page, so you said I might be OK with it having the clientSecret in it.

Also now that I am getting an error code I can see that the error is not having the data in json format.

stdClass::__set_state(array(
'code' => '[missing]registration',
'message' => 'Your request is missing the Registration information as JSON in the entity-body.',

So I modified this line of the sample code to json encode the array. But I still get the error.
$request = array();
$request["applicationId"] = $applicationID;
$request["loginId"] = "me";
$request["password"] = "abc123";
$requestJ = json_encode($request); //convert the array into json
$result = $client->register("",$requestJ);

    ports:
      - 9011:9011

I guess the first step I'd take to troubleshoot this would be to see if I could visit localhost:9011 from my browser to see if FusionAuth in docker was accessible from my local machine.

Also, we discussed putting my client secret in the Oauth login URL. I was concerned about security when doing that. Can you please recommend an easy, more secure place to keep those fields?

I don't recall that discussion, but in general you shouldn't provide the client secret in a url. Can you refresh my memory ?

Now I get the error code lijke in your example that will allow me to fix this thing. In your example above you use localhost too. So how does yours work when mine does not? I am using Docker btw. If using fusionauth:9011 will cause me other headaches, please let me know before I break out the champagne!

Also, we discussed putting my client secret in the Oauth login URL. I was concerned about security when doing that. Can you please recommend an easy, more secure place to keep those fields?

While I have your attention, I noticed that the passwordless login link expires quickly. Is that time setable?

Yes. You can do it in the tenant settings under the advanced tab, or via the api; it's the passwordlessLoginTimeToLiveInSeconds setting.

If you are trying to register, you want to build a json object as documented here

You want to post to this url: /api/user/registration/{userId}. The userId will be something like 6fdacf40-828d-4aaa-8a5a-2119bee94b67 but it looks like you are using the email address of the user.

You also don't need the loginId or the password field (because the user already exists). If the user didn't exist, you'd want to use the fields documented here

I didn't try to run your code in the past, but running this now gives me an error: [couldNotConvert]userId.

client.php:

<?php 

require __DIR__ . '/vendor/autoload.php';

$apiKey = "SNjNZj8jz4A_5BeL07pF901nwlLxRQ3CK6shpuIFQkg";
$client = new FusionAuth\FusionAuthClient($apiKey, "http://localhost:9011");

$applicationId = "85a03867-dccf-4882-adde-1a79aeec50df";

$request = array();
$request["applicationId"] = $applicationId;
#$request["loginId"] = "testanother3@example.com";
$result = $client->register("testanother2@example.com",$request);
echo var_export($result, true);

composer.json:

{
    "require": {
      "fusionauth/fusionauth-client": "^1.19"
    }
}

composer install
php client.php

results in this:

FusionAuth\ClientResponse::__set_state(array(
   'errorResponse' => 
  (object) array(
     'fieldErrors' => 
    (object) array(
       'registration' => 
      array (
        0 => 
        (object) array(
           'code' => '[missing]registration',
           'message' => 'Your request is missing the Registration information as JSON in the entity-body.',
        ),
      ),
       'userId' => 
      array (
        0 => 
        (object) array(
           'code' => '[couldNotConvert]userId',
           'message' => 'Invalid userId [testanother2@example]. This must be a valid UUID String (e.g. 25a872da-bb44-4af8-a43d-e7bcb5351ebc).',
        ),
      ),
    ),
  ),
   'exception' => NULL,
   'method' => 'POST',
   'request' => 
  array (
    'applicationId' => '85a03867-dccf-4882-adde-1a79aeec50df',
  ),
   'successResponse' => NULL,
   'status' => 400,
))

Is this not what you are seeing if you run my code?

Also, I am trying to use this as the URL: http://localhost/index.php/Configure/MyFormEmployees but the menu won't seem to store that. That path works fine from my browser address line.

Logic check: Since the same code works in your environment isn't it likely that there is something wrong with the setup of my application? The lack of a decent error code is an issue.

$apiKey = "s-S2l2DNOpEgjjDlZ2MXnU4QGARj8UszS_BVnvugGoc";
        $client = new FusionAuth\FusionAuthClient( $apiKey, "http://localhost:9011");
        $applicationID="32688330-1630-4e0d-a4de-8ae45c3ca527";

        $request = array();
        $request["applicationId"] = $applicationID;
        $request["loginId"] = "richb201@gmail.com";
        $request["password"] = "abc123";
        $result = $client->register("richb201@gmail.com",$request);
        echo var_export($result, true);


        if (!$result->wasSuccessful()) {
            echo "error";
        } else {
            echo var_export($result->successResponse, true);
       }

} else {
echo var_export($result->successResponse, true);
}

error. I also tried a different email address. I also got an error. Could there be an issue with using $request["loginId"] = "richb201@gmail.com" or register("richb201@gmail.com" ?

$apiKey = "s-S2l2DNOpEgjjDlZ2MXnU4QGARj8UszS_BVnvugGoc";
        $client = new FusionAuth\FusionAuthClient( $apiKey, "http://localhost:9011");
        $applicationID="32688330-1630-4e0d-a4de-8ae45c3ca527";

        $request = array();
        $request["applicationId"] = $applicationID;
        $request["loginId"] = "richb201@gmail.com";
        $request["password"] = "abc123";
        $result = $client->register("richb201@gmail.com",$request);
        if (!$result->wasSuccessful()) {
            echo "error";
        } else {
            echo var_export($result->successResponse, true);
       }

$request = array();

Here you go. I am trying to register a user (richb201@gmail.com). When I run this I get successResponse=NULL. As I alluded to, richb201@gmail.com, was already registered via the console. Albeit, with a different userid.

$apiKey = "s-S2l2DNOpEgjjDlZ2MXnU4QGARj8UszS_BVnvugGoc";
        $client = new FusionAuth\FusionAuthClient( $apiKey, "http://localhost:9011");
        $applicationID="32688330-1630-4e0d-a4de-8ae45c3ca527";

        $request = array();
        $request["applicationId"] = $applicationID;
        $request["loginId"] = "richb201@gmail.com";
        $request["password"] = "abc123";
        $result = $client->register("richb201@gmail.com",$request);
        if (!$result->wasSuccessful()) {
            echo "error";
        }

Can you post your entire code (or a simplified version of it) to github or as a zip file here so I can download it and run it? I'm not quite sure what is going on.