Re: Working out the image path...partly solved, please have a look at my code
| From: | Matt M. | Date: | Tue, 12 Oct 2004 16:00:43 +0000 |
| Subject: | Re: Working out the image path...partly solved, please have a look at my code | ||
| References: | 1 2 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-199261@lists.php.net to get a copy of this message | ||
> /../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?
ok, I gave it a try and honestly this is probably over my head :) but
here is something to try
<?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,'/../') === false)
{
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,$rel_path)
{
$parsed = parse_url($path);
preg_match_all('/\/\.\./',$rel_path, $matches);
if(($count = count($matches[0])) > 0) {
$parts = preg_split('/\//', $parsed['path'], -1, PREG_SPLIT_NO_EMPTY);
for ($i = 1;$i <= $count; $i++) {
array_pop($parts);
}
$path = str_replace($parsed['path'], '/'.implode($parts,'/'),
$path);
}
$rel_path = (preg_match('/^\//',$rel_path)) ? $rel_path :'/'.$rel_path;
$path = preg_replace('/\/\.\./', '', $path.$rel_path);
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/test.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>';
?>
