[development] Getting absolute directory path

[Darren Oh]

On Mar 14, 2007, at 10:08 AM, Khalid Baheyeldin wrote:

> realpath() expands all symbolic links and resolves references to  
> '/./', '/../' and extra '/' characters in   the input path and  
> return the canonicalized absolute pathname. The resulting path will  
> have no symbolic link, '/./' or '/../' components.

The problem is, users are not keeping their modules in the Drupal  
directory. I need to give the script the path to the Drupal root  
directory, not the real path to itself. I would use a URL instead of  
a filesystem path, but I don't want to depend on users to configure  
PHP to allow this.
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