IG Hashtag - jstolpe/instagram-graph-api-php-sdk GitHub Wiki

use Instagram\Hashtag\Hashtag;

$config = array( // instantiation config params
    'hashtag_id' => '<HASHTAG_ID>', // id of the hashtag
    'access_token' => '<ACCESS_TOKEN>',
);

// instantiate hashtag for use
$hashtag = new Hashtag( $config );

// get info on the hashtag
$hashtagInfo = $hashtag->getSelf();