php从主文件夹包含到其他文件夹中的文件

Question

in my root folder of my domain i have files header.php and footer.php, i have created a new folder and file in the new folder and wanted to include the header and footer files from main. So the paths are: main folder: example.com/header.php new file: example.com/folder/new_file.php <- in this file i want to include the header.

I have tried:

<?php include "header.php"; ?>
<?php include "/header.php"; ?>
<?php include "./header.php"; ?>
<?php include "../header.php"; ?>

and none of them work. Any help would be appreciated thanks.

Answer 1

<?php include( $_SERVER['DOCUMENT_ROOT'] . '/header.php' ); ?>

它会起作用的.try可能会在您的任何文件中提供帮助

Answer 2

include_once dirname(__DIR__).'/header.php';

这应该工作。

Answer 3

Thanks for all of your support. To answer my question thanks to all here are the answers.

<?php include( $_SERVER['DOCUMENT_ROOT'] . '/header.php' ); ?>

and php include "../header.php";

DO work and i was able to include a file from main directory so thanks to david and code360.

second part of why the css file was not being read is because i had it like this in header.php file:

<link rel="stylesheet" href="css/bootstrap.css">

and missed the first "/"

Thanks again to code360