link to ../

back one folder

[WhosAWhata]

if you are in a folder
site.com/some/random/ammount/of/folders/

how do you make a script link back to
site.com/some/random/ammount/of/

without being thrown off by (note no trailing slash)
site.com/some/random/ammount/of/folders

my loop looks like this
$dir="dir/";
$d=dir($dir);
while($f=$d->read()) {
if($f == "..") {
//change link
} else {
//other stuff
}
}
$d->close();

[WhosAWhata]

anyideas? i'm sure it could be done with Preg_replace but a don't know the syntax...
right now my code looks like this (sort of)

<?
if (!$dir) $dir = "dir/";
$d = dir($dir);
while($entry = $d->read()) {
if($entry!= ".") {
if(is_dir($dir.$entry)){
$r[] = "<a href=\"".$PHP_SELF."?dir=".$dir."/".$entry."/\">".$entry."</a>";
}else{
$f[] = "<a href=\"".$dir.$entry."\">".$entry."</a>";
}
}
}
natcasesort($r);
natcasesort($f);
$html = "<h2>folders</h2>".implode("<br>",$r)."<hr><h2>files</h2>".implode("<br>",$f);
echo $html;
?>

so if you click ../ your url ends up looking like this
[site.com...]

when it could be simplified to
[site.com...]

[stuartc1]

An easy way to do this is to pass the full path (from the root of the dirs you are browsing) in all entries :) I like doing things the easy way!

However if there are many many folders then this is probably not practicle. There are many ways to do this kind of thing, but without much of your code it's hard to advise.

regex may well prove to be the best way.

[py9jmas]

Is there a reason why you can't just use
<a href="../">Blah</a>?

Or am I not understanding this right?

[WhosAWhata]

i am using <a href="files.php?dir=WHATEVER/THE/DIR/WAS/../">../</a>

but this eventually causes a long url
like
files.php?dir=dir/subdir/../anotherSubdir/dirInsideSubdir/../../subdir/

which is equal to

files.php?dir=dir/subdir/

[httpwebwitch]

Split your URL into parts separated by "/"
Then step through the array. When you encounter ".." as a step in the path, pop off the previous directory, and continue.

$path = explode("/",$URL);
$pathcopy = array();
foreach($path as $k=>$v){
 if ($v==".."){
  array_pop($pathcopy);
 }else{
  array_push($pathcopy,$v);
 }
}
$URL=implode("/",$pathcopy);

[WhosAWhata]

perfect...thanks