tp5 url重写

// +----------------------------------------------------------------------
// | URL重写
// +----------------------------------------------------------------------
return [
    'kc/index/:controller/:action' => 'index/:controller/:action',
    'kc/index/:controller' => 'index/:controller/index',
    'kc/index/' => 'index/index/index',
    'kc/' => 'index/index/index',
];