I am testing with
$mediaID = $reply->media_id_string;
//Update metadata
$mediaTags = array(
‘media_id’ => $mediaID ,
‘alt_text’ => array(‘text’ => ‘Test Tag’));
print_r($mediaTags);
$reply = $cb->media_metadata_create($mediaTags);
Picture appears within the tweet, but no tags or metadata, so I must be doing something wrong, or it still doesn’t work!