thinkphp5.1 Env 系统常量设置方法和对照

5.1版本取消了所有的系统常量，原来的系统路径变量改为使用Env类获取（需要引入think\facade\Env）

1. echo "app_path=========".Env::get('app_path')."</br>";

2. echo "root_path=========".Env::get('root_path')."</br>";

3. echo "think_path=========".Env::get('think_path')."</br>";

4. echo "config_path=========".Env::get('config_path')."</br>";

5. echo "extend_path=========".Env::get('extend_path')."</br>";

6. echo "vendor_path=========".Env::get('vendor_path')."</br>";

7. echo "runtime_path=========".Env::get('runtime_path')."</br>";

8. echo "route_path=========".Env::get('route_path')."</br>";

9. echo "module_path=========".Env::get('module_path')."</br>";

1. app_path=========/ys720/wwwroot/app/

2. root_path=========/ys720/wwwroot/

3. think_path=========/ys720/wwwroot/thinkphp/

4. config_path=========/ys720/wwwroot/config/

5. extend_path=========/ys720/wwwroot/extend/

6. vendor_path=========/ys720/wwwroot/vendor/

7. runtime_path=========/ys720/wwwroot/runtime/

8. route_path=========/ys720/wwwroot/route/

9. module_path=========/ys720/wwwroot/app/admin/