delete-flarum-avatar.php

<?php

// See: https://gist.github.com/woganmay/4c15a0f7c16e41ab3a3ea1a73c595bf9
$api_url = sprintf("https://my.flarum.site/api/users/%s/avatar", $user->id);

// See: https://gist.github.com/woganmay/88f15e96fc019657a0e594366403b5cf
$token = $session->token;

$ch = curl_init($api_url);

curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");

curl_setopt($ch, CURLOPT_HTTPHEADER, [
   'Content-Type: application/json',
   'Authorization: Token ' . $token
]);

$result = curl_exec($ch);