Re: Working out the image path...partly solved, please have a look at my code

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Hey Matt,
Thanks for replying.


> > <?php
> > 
> > $url='http://www.textx.com/t1/t2/t3/blah.html';
> > 
> > function ret_url($rel_path, $base = '')
> > {
> >  $base_path = substr($base, 0, strpos($base,
> '/',7));
> > 
> > if(substr($rel_path,0,1)=='/' &&
> > !strpos($rel_path,'/../'))
> >  {  return $base_path.$rel_path; }
> > 
> >          elseif(strpos($rel_path,'://') > 0)
> >                  {  return $rel_path; }
> > 
> >                  else {  return
> > collapse(dirname($base).'/'.$rel_path); }
> > 
> >  return $rel_path;
> > }
> > 
> > /* this function removes the /../ parts */
> > function collapse($path)
> > {
> > 
> >  while(strpos($path,'/../') !== false)
> >  {$p2 = ereg_replace('/([^/]*)/\.\./','/',$path);
> >   if($p2==$path)
> >    break;
> >   $path = $p2;
> >  }
> > 
> >  return $path;
> > }
> > 
> > $uris = array();
> > $uris[] = '/blah.jpg';
> > $uris[] ='/imgs/blah.jpg';
> > $uris[] ='imgs/blah.jpg';
> > $uris[] ='../imgs/blah.jpg';
> > $uris[] ='/../imgs/blah.jpg';  // ## not working
> ##
> > $uris[] ='/../../imgs/blah.jpg'; // ## not working
> ##
> > $uris[]
> ='http://some-site-blah.com/imgs/blah.jpg';
> > 
> > echo '<table border=1>';
> > foreach($uris as $uri)
> > {
> > echo '<tr><td>'.htmlspecialchars($uri).'</
> >
>
td><td>'.htmlspecialchars(ret_url($uri,$url)).'</td></tr>';
> > }
> > echo '</table>';
> > ?>



> try this:
> 
> function ret_url($rel_path, $base = '')
> {
> $base_path = substr($base, 0, strpos($base, '/',7));
> 
> if(substr($rel_path,0,1)=='/' &&
> strpos($rel_path,'/../') === false)
> {  return $base_path.$rel_path; }
> 
>         elseif(strpos($rel_path,'://') > 0)
>                 {  return $rel_path; }
> 
>                 else {  return
> collapse(dirname($base).'/'.$rel_path); }
> 
> return $rel_path;
> }

Close, but its not giving the correct paths.
eg:
/../imgs/blah.jpg should return
http://www.textx.com/t1/t2/imgs/blah.jpg

but its returning:
http://www.textx.com/t1/t2/t3/imgs/blah.jpg

and this: /../../imgs/blah.jpg
should return: http://www.textx.com/t1/imgs/blah.jpg

but its returning:
http://www.textx.com/t1/t2/imgs/blah.jpg


in both cases one extra level directory :-(

Any ideas?

Thanks,
Mag


=====
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- Creativity is great, but plagiarism is faster!
- Smile, everyone loves a moron. :-)


		
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