如何让require_once从上面的目录中获取文件？

Question

I'm trying to set up a site of which I was not the original owner, on a new server - In Apache2, the document root has been set to /var/www/html, which is where the index.php that I want to be the default 'homepage' is located.

There are a number of files in other directories in www. For an example, /common/cachelite/Lite.php can also be found in /var/www.

The php in index.php references this using require_once, like below:

error_reporting(E_ALL);
ini_set('Display_errors','On');
require_once('../common/cachelite/Lite.php');

But throws the following error, which I have taken from my Apache2 error.log:

PHP Fatal error:  require_once(): Failed opening required '../common/cachelite/Lite.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/html/index.php on line 4

The file itself is definitely there, so can anybody shed some light on this issue for me? What's going on?

Answer 1

I have run in to this problem a few times and always fix it like so.

$file = dirname(dirname(__file__));
require_once($file ."/common/cachelite/Lite.php");

To narrow it down further.

try this if doing it on the web server and not command line add <pre></pre> tags.

echo __file__ . "
";
echo dirname(__file__). "
";
echo dirname(dirname(__file__)). "
";

My next thought is, file permissions or misspelled words.