无敌的路由分发

private function _get_path_info()
{
    $c_path_info = (string)$_SERVER['PATH_INFO'];       //找出当前的url
    $first_char  = substr($c_path_info, 0, 1);
    if ($first_char !== '/') {
        $c_path_info = '/' . $c_path_info;
    }
    if (!$c_path_info) {
        $c_path_info = '/';
    }
    if ($c_path_info === '/Index/index' || $c_path_info === '/Index' || $c_path_info === '/Index/') {
        $c_path_info = '/';
    }
    if ($c_path_info !== '/') {
        $c_path_info_arr = explode('/', $c_path_info);
        if (!$c_path_info_arr[2]) {
            $c_path_info = rtrim($c_path_info, '/');
            $c_path_info .= '/index';
        }
    }

    // 无敌的跳转
    if ((int)$_SESSION['_admin_super'] !== 1) {
        if ($c_path_info === '/') {
            // 判断是否有权限
            $role_powers       = explode('-', $_SESSION['_admin_power']);
            $action            = M('action');
            $first_action_info = $action->where(['id' => ['in', $role_powers], 'level' => 2])->find();
            $c_path_info       = $first_action_info['urls'];
            if ($c_path_info !== '/') {
                $this->redirect($c_path_info);
            }
        } else {
            // 查询
            $action      = M('action');
            $action_info = $action->where(['urls' => $c_path_info, 'level' => 2])->find();
            $role_powers = explode('-', $_SESSION['_admin_power']);
            if ($action_info && !in_array($action_info['id'], $role_powers, false)) {
                $current_action_info = $action->where(['id' => ['in', $role_powers], 'level' => 2, 'pid' => $action_info['pid']])->find();
                $c_path_info         = $current_action_info['urls'];
                if ($c_path_info !== '/') {
                    $this->redirect($c_path_info);
                }
            }
        }
    }
    
    return $c_path_info;
}