Explode + url faking problem

[frizzle]

Hi there,

i have a site with fake folders & files.
htaccess rewrites everything to index.php?vars
now in index.php i decide what file to include with a switch/case
statement.

to define where i am, i explode the query string, and check $array[0]
where i am for the main section.
Only now if there are two slashes behind each other
(folder//subfolder), the value inbetween ( '' )
gets ignored, though in 'real' it would give an error. How can i have
explode telling
me that value is '' ?

I hope you understand (sorry for my english)

Frizzle.

[Toby Inkster]

Re: Explode + url faking problem

frizzle wrote:
[color=blue]
> Only now if there are two slashes behind each other
> (folder//subfolder)[/color]

Best thing is to make sure explode() never even sees that.

<?php
$url = 'folder//subfolder/////somefile';

while (strstr($url, '//'))
$url = str_replace('//', '/', $url);

$parts = explode('/', $url);

print $parts[0]; /* prints 'folder' */
print $parts[1]; /* prints 'subfolder' */
print $parts[2]; /* prints 'somefile' */
?>

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact

[frizzle]

Re: Explode + url faking problem


Toby Inkster wrote:[color=blue]
> frizzle wrote:
>[color=green]
> > Only now if there are two slashes behind each other
> > (folder//subfolder)[/color]
>
> Best thing is to make sure explode() never even sees that.
>
> <?php
> $url = 'folder//subfolder/////somefile';
>
> while (strstr($url, '//'))
> $url = str_replace('//', '/', $url);
>
> $parts = explode('/', $url);
>
> print $parts[0]; /* prints 'folder' */
> print $parts[1]; /* prints 'subfolder' */
> print $parts[2]; /* prints 'somefile' */
> ?>
>
> --
> Toby A Inkster BSc (Hons) ARCS
> Contact Me ~ http://tobyinkster.co.uk/contact[/color]

Well, i figured right now, explode ignores it, and goes past it.
The way you present it, is axactly what it does right now w/o any
str_repl().
What i'd like is to have $array[1] to be empry or null, etc.

I hope you get it.

Frizzle.

[Bent Stigsen]

Re: Explode + url faking problem

frizzle wrote:[color=blue]
> Toby Inkster wrote:[color=green]
>> frizzle wrote:
>>[color=darkred]
>>> Only now if there are two slashes behind each other
>>> (folder//subfolder)[/color]
>> Best thing is to make sure explode() never even sees that.
>>
>> <?php
>> $url = 'folder//subfolder/////somefile';
>>
>> while (strstr($url, '//'))
>> $url = str_replace('//', '/', $url);
>>
>> $parts = explode('/', $url);[/color][/color]
[snip][color=blue]
> Well, i figured right now, explode ignores it, and goes past it.
> The way you present it, is axactly what it does right now w/o any
> str_repl().[/color]

Can you post an example of code that will do that. You must be doing
something else that removes the empty values.
[color=blue]
> What i'd like is to have $array[1] to be empry or null, etc.[/color]

That is what explode should give you, if you got nothing in between
two separators. If you take Toby's code without the while/str_replace,
then you should get:
Array
(
[0] => folder
[1] =>
[2] => subfolder
[3] =>
[4] =>
[5] =>
[6] =>
[7] => somefile
)


/Bent

[frizzle]

Re: Explode + url faking problem


Bent Stigsen wrote:[color=blue]
> frizzle wrote:[color=green]
> > Toby Inkster wrote:[color=darkred]
> >> frizzle wrote:
> >>
> >>> Only now if there are two slashes behind each other
> >>> (folder//subfolder)
> >> Best thing is to make sure explode() never even sees that.
> >>
> >> <?php
> >> $url = 'folder//subfolder/////somefile';
> >>
> >> while (strstr($url, '//'))
> >> $url = str_replace('//', '/', $url);
> >>
> >> $parts = explode('/', $url);[/color][/color]
> [snip][color=green]
> > Well, i figured right now, explode ignores it, and goes past it.
> > The way you present it, is axactly what it does right now w/o any
> > str_repl().[/color]
>
> Can you post an example of code that will do that. You must be doing
> something else that removes the empty values.
>[color=green]
> > What i'd like is to have $array[1] to be empry or null, etc.[/color]
>
> That is what explode should give you, if you got nothing in between
> two separators. If you take Toby's code without the while/str_replace,
> then you should get:
> Array
> (
> [0] => folder
> [1] =>
> [2] => subfolder
> [3] =>
> [4] =>
> [5] =>
> [6] =>
> [7] => somefile
> )
>
>
> /Bent[/color]

function DefineLoc(){
$loc = explode('/', $_SERVER['QUERY_STRING'], ) );
return $loc;
};

The function worked that way for me. Also, when i had trailing slashes,
the current location would differ from w/o any trailing slashes.

Now i have this:
function DefineLoc(){
$loc = explode('/', trim( $_SERVER['QUERY_STRING'], '/' ) );
return $loc;
};

But that's also not as it should be but fixes the trailing problem.

Frizzle.

[Bent Stigsen]

Re: Explode + url faking problem

frizzle wrote:
[snip][color=blue]
> Now i have this:
> function DefineLoc(){
> $loc = explode('/', trim( $_SERVER['QUERY_STRING'], '/' ) );
> return $loc;
> };
>
> But that's also not as it should be but fixes the trailing problem.[/color]

I don't think I quite understand what you want.

Can you give an example value of $_SERVER['QUERY_STRING'], and how the
array returned from DefineLoc should look like.


/Bent

[frizzle]

Re: Explode + url faking problem


Bent Stigsen wrote:[color=blue]
> frizzle wrote:
> [snip][color=green]
> > Now i have this:
> > function DefineLoc(){
> > $loc = explode('/', trim( $_SERVER['QUERY_STRING'], '/' ) );
> > return $loc;
> > };
> >
> > But that's also not as it should be but fixes the trailing problem.[/color]
>
> I don't think I quite understand what you want.
>
> Can you give an example value of $_SERVER['QUERY_STRING'], and how the
> array returned from DefineLoc should look like.
>
>
> /Bent[/color]

$_SERVER['QUERY_STRING'] =
'/artists/nirvana/mtv_unplugged/about_a_girl.ht ml'
$array[0] => artists
$array[1] => nirvana
$array[2] => mtv_unplugged
$array[3] => about_a_girl.ht ml

$_SERVER['QUERY_STRING'] = '/artists/nirvana/mtv_unplugged/'
$array[0] => artists
$array[1] => nirvana
$array[2] => mtv_unplugged
$array[3] => NULL

$_SERVER['QUERY_STRING'] = '/artists/nirvana/mtv_unplugged'
$array[0] => artists
$array[1] => nirvana
$array[2] => mtv_unplugged
$array[3] => NULL

$_SERVER['QUERY_STRING'] = '/artists//mtv_unplugged/'
$array[0] => artists
$array[1] => NULL
$array[2] => mtv_unplugged
$array[3] => NULL

I hope you understand what i mean/want.

Frizzle.

[Bent Stigsen]

Re: Explode + url faking problem

frizzle wrote:
[snip][color=blue]
> $_SERVER['QUERY_STRING'] = '/artists/nirvana/mtv_unplugged'
> $array[0] => artists
> $array[1] => nirvana
> $array[2] => mtv_unplugged
> $array[3] => NULL[/color]
[snip]

This one above is your real problem. You would need some mechanism to
determine what kind last element is, file or part of path. A lazy way
could be to set the criteria or just make the assumption that files
always has an attached extension (i.e. '.' in the name).

For instance:
function DefineLoc(){
$loc = explode('/', trim( $_SERVER['QUERY_STRING'], '/' ) );
if (strrpos(end($l oc), '.')===false) $loc[] = null;
reset($loc);
return $loc;
};

If you have pathnames containing '.', then you would have to write
some code that can make the distinction.

/Bent

[frizzle]

Re: Explode + url faking problem

Bent Stigsen wrote:[color=blue]
> frizzle wrote:
> [snip][color=green]
> > $_SERVER['QUERY_STRING'] = '/artists/nirvana/mtv_unplugged'
> > $array[0] => artists
> > $array[1] => nirvana
> > $array[2] => mtv_unplugged
> > $array[3] => NULL[/color]
> [snip]
>
> This one above is your real problem. You would need some mechanism to
> determine what kind last element is, file or part of path. A lazy way
> could be to set the criteria or just make the assumption that files
> always has an attached extension (i.e. '.' in the name).
>
> For instance:
> function DefineLoc(){
> $loc = explode('/', trim( $_SERVER['QUERY_STRING'], '/' ) );
> if (strrpos(end($l oc), '.')===false) $loc[] = null;
> reset($loc);
> return $loc;
> };
>
> If you have pathnames containing '.', then you would have to write
> some code that can make the distinction.
>
> /Bent[/color]

Actually what i have is quite similar to what you suggest. But it still
doesn't solve my double slash problem, where the value should be NULL.

The thingy i have to check if a filename is specified is the following:

if( preg_match( '/(\.html)$/', $loc[3] ) ){
$song_url = preg_replace( '/(\.html)$/', '', $loc[3] );
$song_extension = TRUE;
}else{
$song_extension = FALSE;
};

It checks all values in the array are UrlSafe(), wich means that they
are A-z, 0-9, -, _ That's also why i delete the last '.html', because
else validation would return false.

Frizzle.

[Toby Inkster]

Re: Explode + url faking problem

frizzle wrote:
[color=blue]
> $_SERVER['QUERY_STRING'] = '/artists//mtv_unplugged/'[/color]

$array = explode('/', $_SERVER['QUERY_STRING']);
array_shift($ar ray);
for ($i=0;$i<4;$i++ )
if (!strlen($array[$i]))
$array[$i] = 'NULL';
[color=blue]
> $array[0] => artists
> $array[1] => NULL
> $array[2] => mtv_unplugged
> $array[3] => NULL[/color]

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact

[Bent Stigsen]

Re: Explode + url faking problem

frizzle wrote:[color=blue]
> Bent Stigsen wrote:[color=green]
>> frizzle wrote:
>> [snip][color=darkred]
>>> $_SERVER['QUERY_STRING'] = '/artists/nirvana/mtv_unplugged'
>>> $array[0] => artists
>>> $array[1] => nirvana
>>> $array[2] => mtv_unplugged
>>> $array[3] => NULL[/color]
>> [snip]
>>
>> This one above is your real problem. You would need some mechanism to
>> determine what kind last element is, file or part of path. A lazy way
>> could be to set the criteria or just make the assumption that files
>> always has an attached extension (i.e. '.' in the name).
>>
>> For instance:
>> function DefineLoc(){
>> $loc = explode('/', trim( $_SERVER['QUERY_STRING'], '/' ) );
>> if (strrpos(end($l oc), '.')===false) $loc[] = null;
>> reset($loc);
>> return $loc;
>> };
>>
>> If you have pathnames containing '.', then you would have to write
>> some code that can make the distinction.
>>
>> /Bent[/color]
>
> Actually what i have is quite similar to what you suggest. But it still
> doesn't solve my double slash problem, where the value should be NULL.[/color]

If I run this:
$url = '/artists//mtv_unplugged/';
$loc = explode('/', trim( $url, '/' ) );
if (strrpos(end($l oc), '.')===false) $loc[] = null;
print_r($loc);

I get:
Array
(
[0] => artists
[1] =>
[2] => mtv_unplugged
[3] =>
)

Isn't that what you want?


/Bent

[snip]

[the DtTvB]

Re: Explode + url faking problem

Let me guess it, you did mod_rewite
RewriteRule ^/(.+?)$ index.php?$1

Is that what you want?
<?php
$requested_page = $_SERVER['QUERY_STRING'];
$requested_page = preg_replace('~/+~', '/', $requested_page );
$requested_tree = explode('/', $requested_page );
?>

I tested with
http://localhost/test5.php?folder///...der///yo///lol and it said
that
$requested_tree is Array (
[0] => folder
[1] => subfolder
[2] => yo
[3] => lol
)

[frizzle]

Re: Explode + url faking problem


the DtTvB wrote:[color=blue]
> Let me guess it, you did mod_rewite
> RewriteRule ^/(.+?)$ index.php?$1
>
> Is that what you want?
> <?php
> $requested_page = $_SERVER['QUERY_STRING'];
> $requested_page = preg_replace('~/+~', '/', $requested_page );
> $requested_tree = explode('/', $requested_page );
> ?>
>
> I tested with
> http://localhost/test5.php?folder///...der///yo///lol and it said
> that
> $requested_tree is Array (
> [0] => folder
> [1] => subfolder
> [2] => yo
> [3] => lol
> )[/color]

I have mod-rewrite:

RewriteBase /testfolder/
RewriteRule ^(index\.php)$ - [L]
RewriteRule ^(img|swf|js|cs s)/.*$ - [L]
RewriteRule ^(.*)$ index.php?$1 [L]

But this also still gives me problems as stated on

http://groups.google.com/group/alt.apache.configuration/browse_thread/thread/0bd6bc52b4feece4

Frizzle.