Are there any best practices or recommended tools for sharing and syncing flashcard decks in a PHP project, similar to services like Anki?

One recommended approach for sharing and syncing flashcard decks in a PHP project is to use a cloud storage service like Google Drive or Dropbox to store the flashcard decks. You can then use the respective APIs provided by these services to upload, download, and sync the flashcard decks across different devices.

// Example code snippet using Google Drive API to upload a flashcard deck
require_once 'vendor/autoload.php';

$client = new Google_Client();
$client->setAuthConfig('credentials.json');
$client->addScope(Google_Service_Drive::DRIVE);

$service = new Google_Service_Drive($client);

$fileMetadata = new Google_Service_Drive_DriveFile(array(
    'name' => 'FlashcardDeck.txt'
));
$content = file_get_contents('path/to/FlashcardDeck.txt');
$file = $service->files->create($fileMetadata, array(
    'data' => $content,
    'mimeType' => 'text/plain',
    'uploadType' => 'multipart',
    'fields' => 'id'
));

echo 'File ID: ' . $file->id;