Small changes to make "Garees Flickr Feed" WordPress plugin survive Flickr https only API.

flickr_feed.php

//...
if(!defined('GAREE_MUSTACHEPHP')) {
	include_once('Mustache.php');
	define('GAREE_MUSTACHEPHP', true);
}


function flickr_api($path = '') {
  return 'https://api.flickr.com' . $path;
}


function garees_flickr_feed_error($msg) {
	return "<span style='color:red'>Garee's Flickr Feed Error : ".$msg."</span>";
}
//...

		$encoded_params[] = urlencode($key).'='.urlencode($value);
	}
	$query = flickr_api("/services/rest/?".implode('&', $encoded_params));
	
	// wenn nichts gesetzt ist dann flickr.interestingness.getList liefern

//...

  $options = get_option('garees_flickr_feed_settings');
	if((isset($options['apikey']) && $options['apikey']!="")) {
		$query = flickr_api("/services/rest/?method=flickr.test.echo&format=php_serial&api_key=". urlencode($options['apikey']));
		$test = unserialize(wp_remote_fopen($query));
		//print_r($test);

//...