How to insert an image using a class (dirname and filepath issue) - php

Question

I have a method in a class I would like to use in order to show an image in a page that could be placed in any directory.
Basically, the class file would be at the root directory and the class would look like this:
class A{
function showImage(){
echo '<img src="img/file.jpg">';
}
}
Problems occur when I call the method in a page which is in a subdirectory.
For example, if I use showImage() in 'subdir/mypage.php', then the image link is broken.
I have looked into $_SERVER['HTTP_HOST'] and dirname(__FILE__) but I coud not find the right mix to get the right image path that could be used in order to show the image from any directory.
What function should I used in the class to get the file path dynamically that would depending on the directory where I am calling showImage()?
Many thanks

Answer 1

class A{
function showImage($link){
$link = str_replace('/home/public', '', $link);
echo '<img src="' . $link . '">';
}
}
and use it like this:
$a->showImage(getcwd().'/img/file.jpg');
The getcwd() will get the directory, then remove the first absolute path to your public folder in the function.
Example case:
test.php is placed in /home/public/images/{test.php}
class.php is placed in /home/public/{class.php}
test.php does:
$a->showImage(getcwd().'/img/file.jpg');
What it'll send to class.php is:
$a->showImage('/home/public/images/img/file.jpg');
Then in your function it'll remove /home/public and show this link:
<img src="/images/img/file.jpg">
MY BAD
I didn't read the answer right. Here's the solution you're looking for:
class A{
function showImage(){
$root = ($_SERVER['HTTPS'] ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . '/';
echo '<img src="' . $root . 'img/file.jpg">';
}
}