PHP Directory Tree - Deleting Folders - php

Question

I have found a script that lists all directories and files in them, and allows for the deletion of files.
I have two problems:
1) How do I add the function to delete a folder (With all the contents in it)
2) How do I make the script not to allow a user to browse up a directory? (For e.g. a user's folder is ./files/$userid/. I want it so that a user won't be able to go to or make any changes to ./files/ or a folder other then ./files/$userid/
$script = basename(__FILE__); // the name of this script
$path = !empty($_REQUEST['path']) ? $_REQUEST['path'] : dirname('./files/' . (string)$userid . '/'); // the path the script should access
$unlink = $_REQUEST['unlink'];
if(!empty($unlink)){
$unlink = realpath("$path/$unlink");
if(is_writable($unlink) && !unlink($unlink)){
echo "<div class=\"error\">Unable to delete file: $unlink</div>";
}
}
echo "<p>Browsing Location: {$path}</p>";
$directories = array();
$files = array();
// Check we are focused on a dir
if (is_dir($path)){
chdir($path); // Focus on the dir
if ($handle = opendir('.')){
while (($item = readdir($handle)) !== false) {
// Loop through current directory and divide files and directorys
if(is_dir($item)){
array_push($directories, realpath($item));
}
else{
array_push($files, ($item));
}
}
closedir($handle); // Close the directory handle
}
else {
echo "<p class=\"error\">Directory handle could not be obtained.</p>";
}
}
else{
echo "<p class=\"error\">Path is not a directory</p>";
}
// List the directories as browsable navigation
echo "<h2>Navigation</h2>";
echo "<ul>";
foreach($directories as $directory){
$delete = is_writable($file) ? "<a class=\"unlink\" href=\"{$script}?path={$path}&unlink={$directory}\">delete</a>" : '';
echo ($directory != $path) ? "<li>{$directory}</li>" : "";
}
echo "</ul>";
echo "<h2>Files</h2>";
echo "<ul>";
foreach($files as $file){
// Comment the next line out if you wish see hidden files while browsing
if(preg_match("/^\./", $file) || $file == $script){continue;} // This line will hide all invisible files.
$delete = is_writable($file) ? "<a class=\"unlink\" href=\"{$script}?path={$path}&unlink={$file}\">delete</a>" : '';
echo '<li>' . $file . " $delete</li>";
}
echo "</ul>";

Answer 1

1) Try use this function to delete folder recursively (see manual, User contributed notes section http://php.net/manual/en/function.rmdir.php):
function delTree($dir) {
$files = array_diff(scandir($dir), array('.','..'));
foreach ($files as $file) {
(is_dir("$dir/$file")) ? delTree("$dir/$file") : unlink("$dir/$file");
}
return rmdir($dir);
}
2) Better develop some filemanager to allow users browse certain folders. Or see some ready solutions: http://www.jquery4u.com/plugins/10-jquery-file-manager-plugins/