/**
* Returns the id of a specific package in the active dependencies.
*
* @param string $package package identifier
* @return mixed
*/
public static final function getPackageID($package)
{
if (defined('PACKAGE_ID')) {
if (self::$packageDependencyCache === null) {
self::$packageDependencyCache = self::getCache()->get('packageDependencies-' . PACKAGE_ID);
}
if (isset(self::$packageDependencyCache[$package])) {
return self::$packageDependencyCache[$package];
}
}
return null;
}
