Hello,
I see one potential problem with this detection in one special case.
This will only occur if you use Apache's feature PATH_INFO.
There $current_page will be inaccurate as the scriptname might
be /index.php but the URL could be /index.php/path/to/mypage or just
/index/path/to/mypage - depending on Apache's configuration and link
presentation.
I mention this because I have used this extensively to work around
having to rely on mod_rewrite.
Richard
-----Original Message-----
From: John W. Holmes
Sent: Monday, May 10, 2004, 2:21:36 AM
> Hello. I'm relying on the following code so that a script can
> automatically detect where it's installed and create paths and URLs from
> the information. This way absolute paths and URLs are always used.
> I've had a couple people report that the script wasn't finding the paths
> correctly, though, so I'm asking if people could test this out on their
> server and see if it detects the paths or not.
> <?php
> //Install path (path to survey.class.php)
> $path = dirname($_SERVER['PATH_TRANSLATED']);
> //Determine protocol of web pages
> if(isset($_SERVER['HTTPS']) &&
> strcasecmp($_SERVER['HTTPS'],'ON') == 0)
> { $protocol = 'https://'; }
> else
> { $protocol = 'http://'; }
> //HTML address of this program
> $dir_name = dirname($_SERVER['SCRIPT_NAME']);
> if($dir_name == '\\')
> { $dir_name = ''; }
> $html = $protocol . $_SERVER['SERVER_NAME'] . $dir_name;
> //Determine web address of current page
> $current_page = $protocol . $_SERVER['SERVER_NAME'] .
> $_SERVER['SCRIPT_NAME'];
> echo "Path to script: $path<br />";
> echo "URL to script directory: $html<br />";
> echo "URL to current script: $current_page";
?>>
> It should print out the file system path to where the script was placed
> as well as a URL to the directory it was placed and a URL to the file
> itself.
> I've never had an issue with it personally and I've tested it on Apache
> and IIS on both Windows and Linux. So maybe it's some obscure CGI or OS
> configuration where this isn't working? I just need to know so I can
> plan accordingly.
> The only two substitutions that can be made (that I know of) are:
> $_SERVER['SCRIPT_NAME'] => $_SERVER['PHP_SELF']
> and
> $_SERVER['PATH_TRANSLATED'] => $_SERVER['SCRIPT_FILENAME']
> If it doesn't work for you, does it work if you do one of those
> substitutions?
> Also, this will test if the script is in subdirectories or not, also, so
> testing it within one and seeing if that works, too, is appreciated.
> Thanks for any help and time you're willing to provide.
> --
> ---John Holmes...
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