1. I am using readfile to print the contents of a file:
<?php readfile ('osta/css/themes/selected.txt'); ?>
2. This works perfectly. But I now need to use ROOT_PATH. I add it like so:
<?php readfile (ROOT_PATH . 'osta/css/themes/selected.txt'); ?>
But nothing is printed.
3. To verify that I have the correct path I try this:
<a href="<?php echo (ROOT_PATH . 'osta/css/themes/selected.txt'); ?>">test</a>
which produces a working link to the file.
What am I doing wrong in step #2?
Since ROOT_PATH works in href, that means it's a pathname relative to the webserver's document root, not the root of the real filesystem. readfile() expects a pathname in the real filesystem, so you need to add the document root.
<?php readfile ($_SERVER['DOCUMENT_ROOT'] . ROOT_PATH . 'osta/css/themes/selected.txt'); ?>