Feature Switching

feature-switch.php

<?php
// In bootstrap or something
$featureSwitch = new FeatureSwitch;
$featureSwitch->addCondition('environment', function ($kernel)
{
	return $kernel->getBootstrap()->getEnvironment();
});
$featureSwitch->addCondition('is_user_active', function ($kernel, $user)
{
	return $user->getLastActive() > time() - 3600;
});
$featureSwitch->addCondition('asl', function ($kernel, $user)
{
	return array($user->getAge(), $user->getSex(), $user->getLocation());
});
$featureSwitch->addFeature('male_welcome', array(
	array('environment', 'development'),
	array('environment', 'staging'),
	array('is_user_active', TRUE),
	array('asl', array(21, 'male', 'England')),
));

// In application logic
if ($featureSwitch->isEnabled('male_welcome', $kernel, $user))
{
	
}