groups-all.php

<?php

declare(strict_types=1);

use Fschmtt\Keycloak\Builder;
use Fschmtt\Keycloak\OAuth\GrantType;
use Fschmtt\Keycloak\Representation\Group;

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

$keycloak = (new Builder())
    ->withBaseUrl($_SERVER['KEYCLOAK_BASE_URL'] ?? 'http://keycloak:8080')
    ->withGrantType(GrantType::password('admin', 'admin'))
    ->build();

$realm = 'master';
$groups = $keycloak->groups()->all($realm);

echo sprintf('Realm "%s" has the following groups:%s', $realm, PHP_EOL);

foreach ($groups as $group) {
    echoGroup($group);
}

function echoGroup(Group $group, int $level = 1): void
{
    echo sprintf('%s> Group "%s"%s', str_repeat('-', $level), $group->getName(), PHP_EOL);

    foreach ($group->getSubGroups() as $group) {
        echoGroup($group, $level + 1);
    }
}