php how to include file from an another folder

Question

I want include file from another folder. i used different ways but nothing helped me out. One folder back solution and two folders back none gave me any positive respone.

<?php
   include_once('./../models/config.php');
?>

Answer 1

在文件中包含以下代码行

<?php require_once('../models/config.php'); ?>

Answer 2

How about this:

require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'models' . DIRECTORY_SEPARATOR . 'config.php'

Your models directory is in same path as master.php. I recommend always using absolute paths for this kind of things.

Answer 3

该文件所在的文件夹与master.php文件位于同一文件夹中：

<?php include_once('models/config.php'); ?>