chroot
Here my solution how to do effective recursiv directory listing.
Have fun.
<?php
/**
* example of use:
*/
$d = new RecDir("/etc/",false);
echo "Path: " . $d->getRootPath() . "\n";
while (false !== ($entry = $d->read())) {
echo $entry."\n";
}
$d->close();
class RecDir
{
protected $currentPath;
protected $slash;
protected $rootPath;
protected $recursiveTree;
function __construct($rootPath,$win=false)
{
switch($win)
{
case true:
$this->slash = '\\';
break;
default:
$this->slash = '/';
}
$this->rootPath = $rootPath;
$this->currentPath = $rootPath;
$this->recursiveTree = array(dir($this->rootPath));
$this->rewind();
}
function __destruct()
{
$this->close();
}
public function close()
{
while(true === ($d = array_pop($this->recursiveTree)))
{
$d->close();
}
}
public function closeChildren()
{
while(count($this->recursiveTree)>1 && false !== ($d = array_pop($this->recursiveTree)))
{
$d->close();
return true;
}
return false;
}
public function getRootPath()
{
if(isset($this->rootPath))
{
return $this->rootPath;
}
return false;
}
public function getCurrentPath()
{
if(isset($this->currentPath))
{
return $this->currentPath;
}
return false;
}
public function read()
{
while(count($this->recursiveTree)>0)
{
$d = end($this->recursiveTree);
if((false !== ($entry = $d->read())))
{
if($entry!='.' && $entry!='..')
{
$path = $d->path.$entry;
if(is_file($path))
{
return $path;
}
elseif(is_dir($path.$this->slash))
{
$this->currentPath = $path.$this->slash;
if($child = @dir($path.$this->slash))
{
$this->recursiveTree[] = $child;
}
}
}
}
else
{
array_pop($this->recursiveTree)->close();
}
}
return false;
}
public function rewind()
{
$this->closeChildren();
$this->rewindCurrent();
}
public function rewindCurrent()
{
return end($this->recursiveTree)->rewind();
}
}
?>
dir
(PHP 4, PHP 5)
dir — Return an instance of the Directory class
Description
Directory
Directory
{
string $path
;
resource $handle
;
string Directory::read ( void )
void Directory::rewind ( void )
void Directory::close ( void )
}A pseudo-object oriented mechanism for reading a directory. The given directory is opened. Two properties are available once the directory has been opened. The handle property can be used with other directory functions such as readdir(), rewinddir() and closedir(). The path property is set to path the directory that was opened. Three methods are available: read, rewind and close.
Examples
Example #1 dir() example
Please note the fashion in which dir::read()'s return value is checked in the example below. We are explicitly testing whether the return value is identical to (equal to and of the same type as - see Comparison Operators for more information) FALSE since otherwise, any directory entry whose name evaluates to FALSE will stop the loop.
<?php
$d = dir("/etc/php5");
echo "Handle: " . $d->handle . "\n";
echo "Path: " . $d->path . "\n";
while (false !== ($entry = $d->read())) {
echo $entry."\n";
}
$d->close();
?>
The above example will output something similar to:
Handle: Resource id #2 Path: /etc/php5 . .. apache cgi cli
Notes
Note: The order in which directory entries are returned by the read method is system-dependent.
add a note
User Contributed Notesdir
manuel at buschmanuel dot de
07-Feb-2008 11:45
07-Feb-2008 11:45
jennevdmeer at zonnet dot nl
28-Nov-2007 08:41
28-Nov-2007 08:41
Unlike the others here I've created a function that returns the directory's in a 2-dimensional array. Starting from the requested dir:
<?php
/*
getDirTree(string $dir [, bool $showfiles]);
$dir of the folder you want to list, be sure to have an ending /
$showfiles set to 'false' if files shouldnt be listed in the output array
*/
function getDirTree($dir,$p=true) {
$d = dir($dir);$x=array();
while (false !== ($r = $d->read())) {
if($r!="."&&$r!=".."&&(($p==false&&is_dir($dir.$r))||$p==true)) {
$x[$r] = (is_dir($dir.$r)?array():(is_file($dir.$r)?true:false));
}
}
foreach ($x as $key => $value) {
if (is_dir($dir.$key."/")) {
$x[$key] = getDirTree($dir.$key."/",$p);
}
}
ksort($x);
return $x;
}
?>
Example Output:
Array
(
[folder1] => Array
(
[subfolder1] => Array()
[subfolder2] => Array()
[text.txt] => 1
)
[folder2] => Array()
[folder3] => Array
(
[text.txt] => 1
)
)
cf at chronofish dot com
26-Jun-2007 12:23
26-Jun-2007 12:23
The dir Class, from what I can tell, on a Windows box is not a live image of the directory. When the class is instantiated it takes a snapshot of the directory and then the iterator works off that.
I may be wrong, but when I run two processes that look to see if a directory exists, and then deletes the dir when some processing takes place. Deletes from one process do not effect the iteration of the second.
To get around this I check that the file exists before doing my processing:
$d = dir($dataDir);
while (false !== ($entry = $d->read()))
if ($entry != '..' && $entry != '.' && file_exists("$dataDir\\$entry"))
{
// do stuff
}
$d->close();
I run this as a batch process and can activate it multiple times to process the directory listing in parallel.
-CF
thomas at hawkes dot ca
01-Feb-2007 03:10
01-Feb-2007 03:10
With SPL, you could recursively list all of the folders inside the current directory like this:
<?php
$it = new RecursiveDirectoryIterator('./');
// RecursiveIteratorIterator accepts the following modes:
// LEAVES_ONLY = 0 (default)
// SELF_FIRST = 1
// CHILD_FIRST = 2
foreach (new RecursiveIteratorIterator($it, 2) as $path) {
if ($path->isDir()) {
echo "$path\n";
}
}
?>
http://www.rooftopsolutions.nl
18-Jan-2007 06:17
18-Jan-2007 06:17
<?php
$i = new RecursiveIteratorIterator(new RecursiveDirectoryIterator('.'));
?>
works for me..
alex at snet-group dot org
01-Oct-2006 08:55
01-Oct-2006 08:55
IMHO, thats take most effect with smaller number of errors;)
function get_leaf_dirs($dir)
{
$array = array();
$d = @dir($dir);
if($d)
{
while (false !== ($entry = $d->read()))
{
if($entry!='.' && $entry!='..')
{
$entry = $dir.'/'.$entry;
if(is_dir($entry))
{
$subdirs = get_leaf_dirs($entry);
if ($subdirs)
$array = array_merge($array, $subdirs);
else
$array[] = $entry;
}
}
}
$d->close();
}
return $array;
}
done_to_death at example dot com
24-Aug-2006 02:56
24-Aug-2006 02:56
function directoryList($start,$win32=false){
if($win32){
$slash="\\";
}else{
$slash="/";
}
$basename = pathinfo($start);
$basename = $basename['basename'];
$ls=array();
$dir = dir($start);
while($item = $dir->read()){
if(is_dir($start.$slash.$item)&& $item!="." && $item!=".."){
$ls[$basename][]=directoryList($start.$slash.$item,$win32);
}else{
if($item!="."&&$item!=".."){
$ls[$basename][]=$item;
}
}
}
return $ls;
}
$path = pathinfo(__FILE__);
$ls = directoryList($path['dirname'], true);
22-Feb-2006 10:02
Regarding samuel's comment about the dir() function not supporting Unicode properly, it's all in the encoding. The function does NOT internally change Unicode characters into question marks (?), as I was first led to believe. If you simply try to output them in UTF-8, they'll show up just right.
samuel dot l at mushicrew dot com
24-Jan-2006 07:52
24-Jan-2006 07:52
Note that the dir object will use the default encoding for non-unicode programs on Windows with PHP 5.x.
So, if you have a file named with characters unsupported by the current default encoding, the dir->read() method will return a wrong entry.
<?php
/*
** This script is on the same directory than a file named with
** unsupported characters for the current default encoding.
*/
$d = dir("./");
while(false !== ($e = $d->read()))
echo $e . '<br/>';
?>
This will print a "?" for every unsupported characters, and not the right file name. So take care if you check with is_file/is_dir right after enumerating.
radar at frozenplague dot net
13-Jan-2006 09:00
13-Jan-2006 09:00
Regarding jaqb's post about a correction to the read_dir function, I have one small fix too if people wish to also list the directories inside this directory and read them into the same array.
<?
function read_dir($dir) {
$array = array();
$d = dir($dir);
while (false !== ($entry = $d->read())) {
if($entry!='.' && $entry!='..') {
$entry = $dir.'/'.$entry;
if(is_dir($entry)) {
$array[] = $entry;
$array = array_merge($array, read_dir($entry));
} else {
$array[] = $entry;
}
}
}
$d->close();
return $array;
}
?>
fordiman at gmail dot com
11-Jan-2006 07:15
11-Jan-2006 07:15
Saw the leaf dirs bit... quick mod:
function preg_ls ($path=".", $rec=false, $pat="/.*/") {
$pat=preg_replace ("|(/.*/[^S]*)|s", "\\1S", $pat);
while (substr ($path,-1,1) =="/") $path=substr ($path,0,-1);
if (!is_dir ($path) ) $path=dirname ($path);
if ($rec!==true) $rec=false;
$d=dir ($path);
$ret=Array ();
while (false!== ($e=$d->read () ) ) {
if ( ($e==".") || ($e=="..") ) continue;
if ($rec && is_dir ($path."/".$e) ) {
$ret=array_merge ($ret,preg_ls($path."/".$e,$rec,$pat));
continue;
}
if (!preg_match ($pat,$e) ) continue;
$ret[]=$path."/".$e;
}
return (empty ($ret) && preg_match ($pat,basename($path))) ? Array ($path."/") : $ret;
}
example:
foreach (preg_ls ("/usr/share/fluxbox", true, "/[LT]e[sa]/i") as $file) echo $file."\n";
output:
/usr/share/fluxbox/styles/Leaf/
/usr/share/fluxbox/styles/Clean
/usr/share/fluxbox/styles/Testing/
fordiman at gmail dot com
11-Jan-2006 07:05
11-Jan-2006 07:05
This one's pretty nice. After getting frustrated for hunting down .jpg files in my massive music collection (PHP would run out of memory), I thought there should be a preg_ls function.
function preg_ls ($path=".", $rec=false, $pat="/.*/") {
// it's going to be used repeatedly, ensure we compile it for speed.
$pat=preg_replace("|(/.*/[^S]*)|s", "\\1S", $pat);
//Remove trailing slashes from path
while (substr($path,-1,1)=="/") $path=substr($path,0,-1);
//also, make sure that $path is a directory and repair any screwups
if (!is_dir($path)) $path=dirname($path);
//assert either truth or falsehoold of $rec, allow no scalars to mean truth
if ($rec!==true) $rec=false;
//get a directory handle
$d=dir($path);
//initialise the output array
$ret=Array();
//loop, reading until there's no more to read
while (false!==($e=$d->read())) {
//Ignore parent- and self-links
if (($e==".")||($e=="..")) continue;
//If we're working recursively and it's a directory, grab and merge
if ($rec && is_dir($path."/".$e)) {
$ret=array_merge($ret,preg_ls($path."/".$e,$rec,$pat));
continue;
}
//If it don't match, exclude it
if (!preg_match($pat,$e)) continue;
//In all other cases, add it to the output array
$ret[]=$path."/".$e;
}
//finally, return the array
return $ret;
}
Not bad for a mere 18 lines, don't you think?
Example use:
foreach (preg_ls("/etc/X11", true, "/.*\.conf/i") as $file) echo $file."\n";
Output:
/etc/X11/xkb/README.config
/etc/X11/xorg.conf-vesa
/etc/X11/xorg.conf~
/etc/X11/gui.conf
/etc/X11/xorg.conf
/etc/X11/xorg.conf-fbdev
Anton Backer
05-Jan-2006 04:24
05-Jan-2006 04:24
i've modified the script below to get the leaf folders of any directory (folders with no subfolders).
note: this does not return the folder passed in as a parameter, even if it has no subfolders.
<?php
function get_leaf_dirs($dir) {
$array = array();
$d = dir($dir);
while (false !== ($entry = $d->read())) {
if($entry!='.' && $entry!='..') {
$entry = $dir.'/'.$entry;
if(is_dir($entry)) {
$subdirs = get_leaf_dirs($entry);
if ($subdirs)
$array = array_merge($array, $subdirs);
else
$array[] = $entry;
}
}
}
$d->close();
return $array;
}
?>