Trying to make a start on using EventSub (PHP)

[BarryCarlyon]

@Katarina_Wyatt

To be fair the reference documentation keeps referring to webhooks

EventSub provides data in a transport agnostic way.

Currently EventSub only provides a Webhook transport

@Katarina_Wyatt

Also I’m not sure what error checking I should be doing, the var dump of the $CSoutput response just says ‘NULL’ - again

    $CSoutput = json_decode(curl_exec($CScurl),true);
    curl_close($CScurl);    

should be something like

    $CSoutput = curl_exec($CScurl);
    $CSinfo = curl_getinfo($CScurl);
    curl_close($CScurl);

    if ($CSinfo['http_code'] == 200) {
        $CSjson = json_decode($CSoutput);
        if (json_last_error() == JSON_ERROR_NONE) {
            echo 'Got JSON';
            print_r($CSjson);
        } else {
            echo 'Got a JSON decode error with ' . $CSoutput;
        }
    } else {
        echo 'Got a ' . $CSinfo['http_code'] . ' with ' . $CSoutput;
    }

@Katarina_Wyatt

there’s nothing on that in the generic instructions in Twitch’s reference guide which everyone I ask keeps sending me back to - or if there is, I’m not seeing/understanding it.

The Twitch documentation describes how to do things in the lowest common denominator of cURL.

Then you can take that and convert it into however your language makes cURL/HTTP requests. In this case with PHP it’s either using the curl functions of a library such as guzzle.

As to code examples

For webhooks - https://github.com/BarryCarlyon/twitch_misc/tree/main/webhooks/handlers/php
For EventSub - https://github.com/BarryCarlyon/twitch_misc/tree/main/eventsub/handlers/php

That covers how to process/secure check incoming messages from Twitch.

And a qucik gloss over your code it looks correct for a creation of a webhook request, without testing it myself. So add some error/debug checking and you can find out the issue/problem