I can't download my files with PHP Core API

Ok , I got a new token and I can use it. I can upload any file or I can list my dropbox files. But I cant download my files. I am adding codes again without access token. 

require_once "lib/Dropbox/autoload.php";
use \Dropbox as dbx;
$appInfo = dbx\AppInfo::loadFromJsonFile("app-info.json");
$webAuth = new dbx\WebAuthNoRedirect($appInfo, "PHP-Example/1.0");

$authorizeUrl = $webAuth->start();

$accessToken = '<ACCESS_TOKEN>'; //secret

$dbxClient = new dbx\Client($accessToken, "PHP-Example/1.0");

$f = fopen("tufek.jpg", "w+b");
$fileMetadata = $dbxClient->getFile("/tufek.jpg", $f); /*I cant download*/
fclose($f);
print_r($fileMetadata);

$metaData = $dbxClient->getMetadataWithChildren("/");

foreach($metaData['contents'] as $file){ // I can list my files
    $f = str_replace("/", "", $file['path']);
    echo "<div style='text-align:center; margin-top:25px;'><li>$f</li></div>";
}

[Cross-linking for reference: https://stackoverflow.com/questions/42690512/download-file-not-working-with-dropbox-api ]

Thanks for following up with the additional information. If you're seeing the file metadata as you describe, that means the API call itself worked.

When using that getFile method like this,  the file data is saved to the file object supplied by to the resource $outStream parameter. In your case, that's your $f file object. Once that method completes successfully, you can then read the data from that file, which in your case is at the path "tufek.jpg".