Help with string replace...

[Tihon]

Hello everyone!
I've got the problem with string replace,
i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/
I am trying to make a file manager of a sort, and need to make a link
"UP", which would take the user up one level in a directory...
I tried to use str_replace, seems its not the one,
thn i tried to use preg_replace, seems it is the one i need, but i'm
nowhere
near there...
Thats my last effort:
$output = preg_replace("/(\/*$)/","/", $input);
Could someone help me please?
Thank you very much!

[Guillaume Brocker]

Tihon wrote:

Hello everyone!
I've got the problem with string replace,
i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/
I am trying to make a file manager of a sort, and need to make a link
"UP", which would take the user up one level in a directory...
I tried to use str_replace, seems its not the one,
thn i tried to use preg_replace, seems it is the one i need, but i'm
nowhere
near there...
Thats my last effort:
$output = preg_replace("/(\/*$)/","/", $input);
Could someone help me please?
Thank you very much!

There is a nice function in the PHP function, section Filesystem, called
dirname. Look at <http://www.php.net/manual/en/function.dirname.php>

Regards.

Guillaume

[Guillaume Brocker]

Tihon wrote:

Hello everyone!
I've got the problem with string replace,
i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/
I am trying to make a file manager of a sort, and need to make a link
"UP", which would take the user up one level in a directory...
I tried to use str_replace, seems its not the one,
thn i tried to use preg_replace, seems it is the one i need, but i'm
nowhere
near there...
Thats my last effort:
$output = preg_replace("/(\/*$)/","/", $input);
Could someone help me please?
Thank you very much!

There is a nice function called dirname in the PHP toolbox, under the
section Filsystem. It could repond to your needs.

See <http://www.php.net/manual/en/function.dirname.php>

Regards.

Guillaume

[Martin Lucas-Smith]

Hello everyone!
I've got the problem with string replace,
i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/
I am trying to make a file manager of a sort, and need to make a link
"UP", which would take the user up one level in a directory...

I'm unclear why a simple "<a href="../"> won't work, instead of trying to
compute what the reference should be.
Martin

[Pedro Graca]

Tihon wrote:

i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/

(snip)

Why not combine substr() and strrpos()?
http://www.php.net/substr
http://www.php.net/strrpos

$output = substr($input, 0, strrpos($input, '/'));

when $input is '/one/two'

strrpos($input, '/') will give the position of the last '/' in it (4 in
this case); substr() will return '/one'

Verify whether you need the last character to be a '/' and modify that
line accordingly.

Don't forget to check for inputs without '/'s.
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[Justin Koivisto]

Martin Lucas-Smith wrote:

Hello everyone!
I've got the problem with string replace,
i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/
I am trying to make a file manager of a sort, and need to make a link
"UP", which would take the user up one level in a directory...

I'm unclear why a simple "<a href="../"> won't work, instead of trying to
compute what the reference should be.

using mod_rewrite may be one good reason...

--
Justin Koivisto - sp**@koivi.com
PHP POSTERS: Please use comp.lang.php for PHP related questions,
alt.php* groups are not recommended.
Official Google SERPs SEO Competition: http://www.koivi.com/serps.php

[Tihon]

> Tihon wrote:

i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/

(snip)

Why not combine substr() and strrpos()?
http://www.php.net/substr
http://www.php.net/strrpos

$output = substr($input, 0, strrpos($input, '/'));

when $input is '/one/two'

strrpos($input, '/') will give the position of the last '/' in it (4 in
this case); substr() will return '/one'

Verify whether you need the last character to be a '/' and modify that
line accordingly.

Don't forget to check for inputs without '/'s.

Thanks all of you so very much!
Dirname does exactly what i need (never heard of it before, i
definately must get a book! :()
And combining substr and strrpos is a great way too!
Thanks a lot!

[Tihon]

Pedro Graca <he****@hotpop.com> wrote in message news:<bv*************@ID-203069.news.uni-berlin.de>...

Tihon wrote:

i've got a string like:
/adsf/sdfd34/sdf/435ff/sdfdf
and i need to delete the last characters before "/", so it would
become:
/adsf/sdfd34/sdf/435ff/

(snip)

Why not combine substr() and strrpos()?
http://www.php.net/substr
http://www.php.net/strrpos

$output = substr($input, 0, strrpos($input, '/'));

when $input is '/one/two'

strrpos($input, '/') will give the position of the last '/' in it (4 in
this case); substr() will return '/one'

Verify whether you need the last character to be a '/' and modify that
line accordingly.

Don't forget to check for inputs without '/'s.

My previous post does not seem to appear,
Thanks to all of you, thats exactly what i needed!
Thank you!