php包含根目录以外的目录中的文件

Question

I've got a global template page, /layout_header.php as well as some other file stored in /aFolder/index.php .

In /layout_header.php , I have:

<?php
    // Reference to scripts and other files
    echo "<img src='img/lollipop.png'/>";
    echo "<script src='js/move.js'/>";
    echo "<a href='aFolder/movement.php'>Click here!</a>";
?>

In /aFolder/index.php , I have:

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

Now, /aFolder/index.php has no problems calling the /layout_header.php file. Unfortunately, because the directory is now /aFolder , I face the following problems:

• Unable to view the image, since image is now linked as /aFolder/img/lollipop.png (which does not exist)
• Unable to execute script because of reason listed above.
• Invalid URL because of reason listed above.

Many of my scripts and css files are using relative path. In other words, if index.php was placed in the root folder, everything works fine.

How should I go about solving the problem of files in subdirectories?

Answer 1

You can see that in all PHP frameworks (at least professionals) a variable/constant as APPPATH, BASEPATH etc. So you need to define your similar variable/constant in your project and use it as needed.

<?php
// a.php: assuming this included everywhere at very first line 
// and located in root directory
// preferable, define a constant instead of variable, cos it 
// may used in functions directly without "global $ROOT";

// for "include"
define('ROOT', __DIR__); // for PHP >= 5.3
define('ROOT', realpath(dirname(__FILE__)));  // for PHP < 5.3
// for "src, href" etc
define('HTTP', $_SERVER['SERVER_NAME']); // for local development support i.e foo.com.local

// includes
include ROOT .'/layout_header.php';
include ROOT .'/classes/mailer.php';
include ROOT .'/foo/bar/baz.php';
...

// src,href
printf('<script src="%s/js/move.js" />', HTTP);
printf('<img src="%s/img/lollipop.png" />', HTTP);

print '<a href="'. HTTP .'/aFolder/movement.php">Click here!</a>';
...
?>

Answer 2

Always use $_SERVER['DOCUMENT_ROOT'].'path/to/file' for including php files when it's relative.

And for images and script files and css files use yourdomain.com/path/to/file.extension

Answer 3

Have you tried using complete root instead of relative.

define('WEB_ROOT', 'http://yourdomain.com/');  // localhost path etc


echo "<img src=".WEB_ROOT."img/lollipop.png'/>";
echo "<script src=".WEB_ROOT."'js/move.js'/>";
echo "<a href='".WEB_ROOT."aFolder/movement.php'>Click here!</a>";

Answer 4

There is many solutions that you can do:

• Go to your config file to change roots of your project.

• Leave the index.php into the folder aFolder/index.php and make a redirection from it to an other file

• Change your htacess file to make a redirection

• Change all path by taking url from the server.

I will took the second one (duplicate the index and put it with /layout_header.php) Remove the content from aFolder/index.php and add to it a redirection to the other index file:

<?php

   header( 'Location: ../index.php' ) ;

?>