Directory navigation

[jflavin]

I'm currently building a file navigation system in PHP.

The only bit I'm stuck with is how do i create a link to a previous directory.

getcwd() gets the current directory - but how do I easily obtain the next level up

e.g.

currentdirectory is /documents/france/magazines

I want to set $previous_dir to
/documents/france , so that I can create a hyperlink for a 'back' button.

Any code snippets out there that'll easily do this?

[[deleted]]

Just add "../" to the path to go up one level:

/documents/france/magazine/../

[jflavin]

Hi , i've fixed my problem , using a combination of the dirname() and str_replace() functions.

Inelegant maybe, but it works!

*CODE SNIPPET**********************

// get the current directory
$current_dir=getcwd();

// dirname returns the next directory up
// a level
$previous_dir = dirname ($current_dir);

// now replace the section of the $previous
// dir string with a base URL
// in my case currently "http://localhost"

$previous_url = str_replace("/home/sites/site2/web",$base_url,$previous_dir);

// THUS if the current directory is
// /home/sites/site2/web/documents/france/mag// azines, my BACK button url would point now
// to http://localhost/documents/france

// this displays a "BACK" icon , which
// takes you back up the directory tree

$image_url="/icons/backicon.gif";
echo "<tr>
<td bgcolor='#FFFFF0' font face='arial' size='2'>
<a href=\"$previous_url\">
<img src=$image_url></a>";