From: "John Schulz" <[EMAIL PROTECTED]>
> After reading the manual entry on $_SERVER predefined variables, I'm
> unclear on the difference between 'SCRIPT_FILENAME' and 'PATH_TRANSLATED'.
>
> Results from a test script, run from a few different locations on my
> webserver, were always the same for these two variables.
>
> I'm especially confused by the "Filesystem- (not document root-) based
> path" comment for 'PATH_TRANSLATED'.
Not sure what to say on this one other than, yeah, they're the same. :)
> On a pseudo-related topic: what should you use to find the absolute path
> from root to your application directory when you need to include a file?
> For example, I'm writing an application that has a function library in
> 'app/lib/'. From any file in the application, at any directory level, I
> want to be able to include specific files from the library.
>
> What's the best way to find '/absolute/path/from/root/' from
> '/absolute/path/from/root/app/*/any_file.php'?
>
> Since the path you get from 'DOCUMENT_ROOT' isn't necessarily where the
> executed file is (e.g., user directories), should that be avoided for
> this type of task?
Not sure if this will help either, but this is what I use to determine
"where I'm at" in scripts I write.
//System path to program
$this->CONF['path'] = dirname($_SERVER['PATH_TRANSLATED']);
//Determine protocol of web pages
if(isset($_SERVER['HTTPS']) && strcasecmp($_SERVER['HTTPS'],'ON') ==
0)
{ $this->CONF['protocol'] = 'https://'; }
else
{ $this->CONF['protocol'] = 'http://'; }
//HTML address of this program
$dir_name = dirname($_SERVER['SCRIPT_NAME']);
if($dir_name == '\\')
{ $dir_name = ''; }
$this->CONF['html'] = $this->CONF['protocol'] .
$_SERVER['SERVER_NAME'] . $dir_name;
//Determine web address of current page
$this->CONF['current_page'] = $this->CONF['protocol'] .
$_SERVER['SERVER_NAME'] . $_SERVER['SCRIPT_NAME'];
Then, if all of my methods, I use $this->CONF['path'] to include files
relative to the file system and $this->CONF['html'] to include files
relative to the HTML root.
//Include a library file
include($this->CONF['path'] . '/includes/db.inc');
//Path to image
<img src="<?=$this->CONF['html']?>/images/picture.gif">
Hope that helps.
---John Holmes...
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