即使路径正确，图像也不会显示

Question

Right now my file structure looks like this:

root
    /images
        /banner.png
    /dir
        /file.php
    /index.php

I'm working in file.php . I'm trying to access banner.png , and so far I have this:

<?php echo dirname( dirname(__FILE__) ) . '/' . $recent1["Image"];?>

Where $recent1["Image"] is images/banner.jpg .

When I echo the code as plain text, this path shows up:

/home/htdocs/images/banner.png

Which I feel like is right, but I'm not sure if it's the exact same thing as

(root)/images/banner.png

Again, I feel like those two are the same thing, but the image isn't displaying when I put that code I showed above in for the src attr for an img tag. It shows that broken picture icon thing. Yes, I'm sure that images/banner.png exists. Thanks for the help in advance.

Edit: I also might add that in index.php , using just $recent1["Image"] does indeed display the image.

Answer 1

Try using a different Magic constant

I think you're looking for

__DIR__

Using your provided example

  <?php echo __DIR__ . '/' . $recent1["Image"];?>

Answer 2

Instead of __FILE__ you should use $_SERVER['PHP_SELF'] . The documentation explains:

The filename of the currently executing script, relative to the document root. For instance, $_SERVER['PHP_SELF'] in a script at the address http://example.com/foo/bar.php would be /foo/bar.php.

<?php echo dirname( dirname($_SERVER['PHP_SELF']) ) . '/' . $recent1["Image"];?>

You could also use $_SERVER['SCRIPT_FILENAME'] . They could be different if you have URLs like /dir/file.php/foo/bar (this is sometimes preferred for SEO reasons, although it's often rewritten in .htaccess to /dir/file.php?param1=foo&param2=bar )

You could also use a relative path:

<?php echo "../" . $recent1["Image"]; ?>

Answer 3

The main issue in the code provided is that you are calling dirname() twice.

<?php echo dirname( dirname(__FILE__) ) . '/' . $recent1["Image"];?>

"Given a string containing the path of a file or directory, this function will return the parent directory's path that is levels up from the current directory." http://php.net/manual/en/function.dirname.php

Example

Given that __FILE__ results to '/home/htdocs/index.php' .

dirname(__FILE__) = '/home/htdocs/'

dirname('/home/htdocs/'); = '/home/'

Then, you append the image path '/images/banner.jpg'

Results in

'home/images/banner.jpg'

When the path really should be

'/home/htdocs/images/banner.jpg'