Call to undefined function GuzzleHttp\Promise\settle()

[adem-genc53]

Although I installed the latest version of "google-api-php-client", we can't fix the "Promise" error. I'm updating with "Composer" but we can't fix the "Promise" error. What am I doing wrong?

The following code is the code to create a folder tree. `include DIR . '/google_drive_setup.php'; use GuzzleHttp\Client; use GuzzleHttp\Promise;

class GoogleDriveTreeView { private $service; private $folderId; private $client;

public function __construct($service, $folderId = 'root') {
    $this->service = $service;
    $this->folderId = $folderId;
    $this->client = new Client();
    ob_start();
    ini_set('memory_limit', '-1');
    ignore_user_abort(true);
    set_time_limit(3600); // 1 saat
}

public function showSize($size_in_bytes) {
    if ($size_in_bytes >= 1073741824) {
        return number_format($size_in_bytes / 1073741824, 2) . ' GB';
    } elseif ($size_in_bytes >= 1048576) {
        return number_format($size_in_bytes / 1048576, 2) . ' MB';
    } elseif ($size_in_bytes >= 1024) {
        return number_format($size_in_bytes / 1024, 2) . ' KB';
    } elseif ($size_in_bytes >= 1) {
        return $size_in_bytes . ' Bayt';
    } else {
        return '0 Bayt';
    }
}

private function fetchFiles($query) {
    $pageToken = null;
    $files = [];

    do {
        $response = $this->service->files->listFiles([
            'q' => $query,
            'pageToken' => $pageToken,
            'fields' => 'nextPageToken, files(id, name, mimeType, size)',
            'orderBy' => 'name',
        ]);

        $files = array_merge($files, $response->files);
        $pageToken = $response->nextPageToken;
    } while ($pageToken);

    return $files;
}

private function fetchFileDetailsParallel($fileIds) {
    $promises = [];
    foreach ($fileIds as $fileId) {
        $promises[$fileId] = $this->client->getAsync("https://www.googleapis.com/drive/v3/files/{$fileId}?fields=size");
    }
    $results = Promise\settle($promises)->wait();
    $sizes = [];
    foreach ($results as $fileId => $result) {
        if ($result['state'] === 'fulfilled') {
            $sizes[$fileId] = json_decode($result['value']->getBody(), true)['size'] ?? 0;
        } else {
            $sizes[$fileId] = 0;
        }
    }
    return $sizes;
}

public function getFilesAndFolders() {
    $query = "'{$this->folderId}' in parents";
    $files = $this->fetchFiles($query);

    $drive_dizinler_arr = [];
    $drive_dosyalar_arr = [];

    $fileIds = array_map(function($file) { return $file->id; }, $files);
    $sizes = $this->fetchFileDetailsParallel($fileIds);

    foreach ($files as $file) {
        if ($file->mimeType == 'application/vnd.google-apps.folder') {
            $drive_dizinler_arr[$file->id][$this->showSize($sizes[$file->id])] = $file->name;
        } else {
            $drive_dosyalar_arr[$file->id][$this->showSize($sizes[$file->id])] = $file->name;
        }
    }

    return [$drive_dizinler_arr, $drive_dosyalar_arr];
}

public function emptyDir($dirid) {
    $query = "'$dirid' in parents";
    $files = $this->fetchFiles($query);
    return count($files);
}

public function generateList() {
    list($drive_dizinler_arr, $drive_dosyalar_arr) = $this->getFilesAndFolders();
    $list = '<ul id="uzak" class="filetree" style="display: none;">';

    foreach ($drive_dizinler_arr as $id => $arr_devam) {
        foreach ($arr_devam as $boyutu => $dizin_adi) {
            if ($this->emptyDir($id) == '0') {
                $list .= '<li class="folder collapsed"><a href="#" rel="' . $id . '" adi="' . $dizin_adi . '">' . $dizin_adi . '<span style="float: right;color: black;padding-right: 10px;">4 KB</span></a></li>';
            } else {
                $list .= '<li class="folder_plus collapsed"><a href="#" rel="' . $id . '" adi="' . $dizin_adi . '">' . $dizin_adi . '<span style="float: right;color: black;padding-right: 10px;">4 KB</span></a></li>';
            }
        }
    }

    foreach ($drive_dosyalar_arr as $id => $devam_arr) {
        foreach ($devam_arr as $boyutu => $dosya_adi) {
            $ext = preg_replace('/^.*\./', '', $dosya_adi);
            $list .= '<li class="file ext_' . $ext . '"><a href="#" rel="' . $id . '" adi="' . $dosya_adi . '">' . $dosya_adi . '<span style="float: right;color: black;padding-right: 10px;">' . $boyutu . '</span></a></li>';
        }
    }

    $list .= '</ul>';
    return $list;
}

}

$folderId = isset($_POST['dir']) ? $_POST['dir'] : 'root'; $driveManager = new GoogleDriveTreeView($service, $folderId); echo $driveManager->generateList(); `