How to filter only photos on REST API 1.1 search/tweets?


I need to retrieve only photos on REST API 1.1

When I call my search like this everything is fine except it gets all the tweets. How do I filter only photos?
I don’t wanna make the if else statements to control if photo exists or not, that is a not the efficient way. I need to only filter photos.
I remember there was filter:images on the old API but now it does not work?

$tag = $_GET['txtHashTag'];

$url = ‘’;
$requestMethod = ‘GET’;
$getfield = ‘?q=’.$tag.’&result_type=recent&count=100&include_entities=true’;

// Perform the request
$twitter = new TwitterAPIExchange($settings);
$tweets= $twitter->setGetfield($getfield)
->buildOauth($url, $requestMethod)

$response = json_decode($tweets);
foreach ($response->statuses as $tweet) {
echo " "