Recursively list files in an archive - php

Question

I'm creating a method that will inspect files in an upload folder and some of these files are archive (tar, tar.gz, zip, rar, etc). I would like to read these archive files and list all files in a nested tree format.
For example, I have an archive file called sandwich.tar.gz, I would like it to be listed as below:-
sandwich.tar.gz
lettuce
mayonaise
cheese
bread (directory)
wholemeal
My code thus far:-
<?php $archive = new PharData('/upload/directory/sandwich.tar.gz');
foreach($archive as $file) {
echo $file . "<br />";
}
But it failed to list files inside the bread directory. How do I fix this?

Answer 1

You can do this using a RecursiveIteratorIterator, because PharData extends the Phar class and the Phar class extends the RecursiveDirectoryIterator class:
$archive = new PharData('/upload/directory/sandwich.tar.gz');
foreach (new RecursiveIteratorIterator($archive) as $file) {
echo $file . "<br />";
}

Answer 2

Although this question is rather dated, considering the stupidity and the uselessness of the previous answer, I cannot but reply.
It seems whatever PHP does is always non-standard and awkward at best...
You got it right to inspect the first level. However, the objects returned from the iteration are not of the same type, thus calling foreach on them will lead to failure.
Iterating on a PharData object gives you PharFileInfo ones. From there you can check for the file type (checking if it is a directory with the inherited isDir() method).
From there, you will need to create another PharData object on the path to the resource obtained from the (also inherited) getPathname() (sic, not getPathName() say the docs!) method. You will then be able to iterate over it...
Full example:
<?php
$archive = new PharData('/upload/directory/sandwich.tar.gz');
foreach($archive as $file) {
echo $file;
if($file->isDir()) {
echo ':';
$dir = new PharData($file->getPathname());
foreach($dir as $child) {
echo "<br />$child";
}
}
echo "<br />";
}
?>
Of course, that kills easy recursion if you have multiple levels in your archive. You will have to cook your own recursive crawler...

Answer 3

Some advice that I was given once, and think about often, comes to mind: code will do EXACTLY what you ask it to do: nothing more, nothing less.
Ask the machine: 'if this is a directory, please display the contents?'
Your function thinks that it is looking for a $file, and thus outputs the name of that file.
Consider http://php.net/manual/en/function.readdir.php and http://www.php.net/manual/en/function.is-dir.php