/**
* Get or create the singleton alias loader instance.
*
* @param array $aliases
* @return \Illuminate\Foundation\AliasLoader
*/
public static function getInstance(array $aliases = array())
{
if (is_null(static::$instance)) {
static::$instance = new static($aliases);
}
$aliases = array_merge(static::$instance->getAliases(), $aliases);
static::$instance->setAliases($aliases);
return static::$instance;
}
/**
* Get or create the singleton alias loader instance.
*
* @param array $aliases
* @return \Illuminate\Foundation\AliasLoader
*/
public static function getInstance(array $aliases = array())
{
//单例
if (is_null(static::$instance)) {
return static::$instance = new static($aliases);
}
$aliases = array_merge(static::$instance->getAliases(), $aliases);
static::$instance->setAliases($aliases);
//返回当前类对象，可以做链式操作
return static::$instance;
}