gistfile1.php

$sortByPriority = function($app1, $app2) use ($resident) {
	$priority1 = $app1->getResidentApplication($resident)->priority();
	$priority2 = $app2->getResidentApplication($resident)->priority();
	if(is_null($priority1) && is_null($priority2)) {
		return 0;
	}
	var_dump($priority1); var_dump($priority2);
	exit();	
	if(is_null($priority1)) return -1;
	if(is_null($priority2)) return 1;
	if($priority1 > $priority2) return 1;
	if($priority1 < $priority2) return -1;
	return 0;
};

// apps with dependencies who have been started
$output['startedWithDependencies'] = array_filter($applicationTemplates, function($app) use ($resident) {
	return !$app->dependencies()->isEmpty() && $app->getResidentApplication($resident);
});
usort($output['startedWithDependencies'], $sortByPriority);