php教程

opendir

(PHP 4, PHP 5, PHP 7)

opendir — 打开目录句柄

说明

opendir ( string $path [, resource $context ] ) : resource

打开一个目录句柄，可用于之后的 closedir()，readdir() 和 rewinddir() 调用中。

参数

path

要打开的目录路径

context

context 参数的说明见手册中的 Streams API 一章。

返回值

如果成功则返回目录句柄的 resource，失败则返回 FALSE。

如果 path 不是一个合法的目录或者因为权限限制或文件系统错误而不能打开目录，opendir() 返回 FALSE 并产生一个 E_WARNING 级别的 PHP 错误信息。可以在 opendir() 前面加上"@"符号来抑制错误信息的输出。

更新日志

版本 说明
5.0.0 path 支持 ftp:// URL wrapper
4.3.0 path 可以是任何支持目录列表的 URL，不过在 PHP 4 中只有 file:// URL wrapper 支持此功能

范例

Example #1 opendir() 例子

<?php
$dir = "/etc/php5/";

// Open a known directory, and proceed to read its contents
if (is_dir($dir)) {
    if ($dh = opendir($dir)) {
        while (($file = readdir($dh)) !== false) {
            echo "filename: $file : filetype: " . filetype($dir . $file) . "\n";
        }
        closedir($dh);
    }
}
?>

以上例程的输出类似于：

filename: . : filetype: dir
filename: .. : filetype: dir
filename: apache : filetype: dir
filename: cgi : filetype: dir
filename: cli : filetype: dir

参见

  • is_dir() - 判断给定文件名是否是一个目录
  • readdir() - 从目录句柄中读取条目
  • dir() - 返回一个 Directory 类实例

User Contributed Notes

hxss at ya dot ru 06-Sep-2017 11:02
The TRUE recursive map function for working with dirs & files.
You can create, read(find), update(or move) or delete files/dirs/tree by your callable function.
You can use flags for select what content you need.

<?php
var_dump(dirmap($dst, function($v) {
    pre($v);
    return true;
}, 1|2|4|8));

/**
 * Applies the callback to the entries of the given dir path
 * In accordance with the received flags
 * @param  string   $path   path of the working directory
 * @param  Callable $action Callable function that would be
 *     executed for every entry in path
 * @param  integer  $flags  can be the following flag:
 *     1: apply Callable function for files
 *     2: apply Callable function for directories
 *     4: apply Callable function for $path
 *     8: work recursively
 * @return bool bitwise AND of all (bool)$action calls results
 */
function dirmap(string $path, Callable $action, int $flags = 15) {
    $flF = boolval($flags & 1);
    $flD = boolval($flags & 2);
    $flP = boolval($flags & 4);
    $flR = boolval($flags & 8);
    $result = 1;

    if (is_dir($path)) {

        $dir = opendir($path);
        while ($entry = readdir($dir))
            if (!in_array($entry, ['.', '..'])) {
                $fullEntry = "{$path}/{$entry}";

                if ($flR)
                    $result &= dirmap($fullEntry, $action, $flags & 11);

                if ($flF && is_file($fullEntry) || $flD && is_dir($fullEntry))
                    $result &= (bool)call_user_func($action, $fullEntry);
            }

        if ($flP)
            $result &= (bool)call_user_func($action, $fullEntry);

        return (bool)$result;
    } else
        return is_file($path);
}
?>
sergio dot barrios at upr dot edu dot cu 02-Aug-2016 03:08
iterated function that searches a folder or file in a directory.

<?php

$root = '../Classes';
$search_parameter = "CachedObjectStorageFactory.php";

//if we call the function spider as spider($root);
//will show all the directory content including subdirectories

//if we call the function spider as spider('../Classes', 'Shared');
//and will show the address of the directory

spider($root, $search_parameter);
closedir();
   
function spider($dir,$fileName=""){
   
    $handle = opendir($dir);
    
    while($file= readdir($handle)){

       if($file != "." && $file != ".."){
               
          if($fileName=="")
             echo $dir."/".$file."<br>"; 
        else
           if($file == $fileName)       
            echo $dir."/".$file."<br>";          
          
                
        if(!is_file($dir."/".$file))            
            spider($dir."/".$file,$fileName);
        
      }   
   }
  
}    

?>
hz_php at hotmail dot com { hussam alzahabi } 24-Apr-2016 10:59
Sometimes the programmer needs to access folder content which has arabic name but the opendir function will return null resources id

for that we must convert the dirname charset from utf-8 to windows-1256 by the iconv function just if the preg_match function detect arabic characters and use " U " additionality to enable multibyte matching

<?php

$dir = ("./"); // on this file dir
     
// detect if the path has arabic characters and use " u "  optional to enable function to match multibyte characters

if (preg_match('#[\x{0600}-\x{06FF}]#iu', $dir) ) 
{

    // convert input ( utf-8 ) to output ( windows-1256 )
   
    $dir = iconv("utf-8","windows-1256",$dir);
   
}

 if( is_dir($dir) )
 {
    
    
     if(  ( $dh = opendir($dir) ) !== null  )
     {
   
        
         while ( ( $file = readdir($dh) ) !== false  )
         {
            
            
             echo "filename: ".$file ." filetype : ".filetype($dir.$file)."<br/>";
            
            
         }
       
     }
    
    
 }

?>
olivernassar.com 03-Aug-2009 01:46
Hopefully this helps someone else. Returns a list of all the files in the directory and any subdirectories.
Excludes files/folders that are in the $exempt array. Can modifiy it so files aren't passed by reference fairly easily.

<?php

    function getFiles($directory,$exempt = array('.','..','.ds_store','.svn'),&$files = array()) {
        $handle = opendir($directory);
        while(false !== ($resource = readdir($handle))) {
            if(!in_array(strtolower($resource),$exempt)) {
                if(is_dir($directory.$resource.'/'))
                    array_merge($files,
                        self::getFiles($directory.$resource.'/',$exempt,$files));
                else
                    $files[] = $directory.$resource;
            }
        }
        closedir($handle);
        return $files;
    }

?>
Anonymous 24-Jul-2009 08:42
If you want to iterate through a directory, have a look at the SPL DirectoryIterator:
http://php.net/manual/class.directoryiterator.php
Madog Llwyd 09-May-2009 05:22
A simple piece to open a directory and display any files with a given extension. Great for things like newsletters, score sheets or the like where you just want to make it easy on the user - they just dump in the file with the correct extension and it's done. A link is given to the file which opens up in a new window.

<?php
  $current_dir = "$DOCUMENT_ROOT"."dirname/";    //Put in second part, the directory - without a leading slash but with a trailing slash!
  $dir = opendir($current_dir);        // Open the sucker
 
  echo ("<p><h1>List of available files:</h1></p><hr><br />");
  while ($file = readdir($dir))            // while loop
    {
    $parts = explode(".", $file);                    // pull apart the name and dissect by period
    if (is_array($parts) && count($parts) > 1) {    // does the dissected array have more than one part
        $extension = end($parts);        // set to we can see last file extension
        if ($extension == "ext" OR $extension == "EXT")    // is extension ext or EXT ?
             echo "<a href=\"$file\" target=\"_blank\"> $file </a><br />";    // If so, echo it out else do nothing cos it's not what we want
        }
    }
  echo "<hr><br />";
  closedir($dir);        // Close the directory after we are done
?>
DaveRandom 18-Apr-2009 09:08
A couple of notes on Matt's posts on Windows Network Drives:

Since the system() command writes the output of the executed shell command straight to the output buffer, if you wish to hide the return of the mapping command (i.e. "The command completed succesfully" or an error message) from a web browser, you need to alter the command that is sent to the shell so that the output of that command is hidden.

You probably thinking "why not just use exec()?", and it's a reasonable question, but for some reason it doesn't always work - I guess it's another NT user permissions issue. If you want to guarantee you app will work with no messing around on the host system, use the system() command.

In the Windows command shell, you can hide the output of a command by sending both the output (1) and error (2) messages to "nul" using pipes, in other words ">nul 2>&1" on the end of the command. The username and password order in the "net use..." command needs switching in Matt's post.

Here (http://networkm.co.uk/static/drive.html) is a function I wrote to dynamically choose which drive letter to use, based on what is currently mapped and accessible to PHP.

<?php

// Define the parameters for the shell command
$location = "\\servername\sharename";
$user = "USERNAME";
$pass = "PASSWORD";
$letter = "Z";

// Map the drive
system("net use ".$letter.": \"".$location."\" ".$pass." /user:".$user." /persistent:no>nul 2>&1");

// Open the directory
$dir = opendir($letter.":/an/example/path")

...

?>
Richard Bronosky 11-Mar-2009 09:14
The easiest way to get a dir listing and sort it is to exec() out to ls (eg:'ls -t'). But, that is considered "unsafe". My hosting company finally caught me doing it so here is my fastest solution. (Lucky for me each file is created with a Unix Timestamp at the end of the name and no other numbers in it.)

<?php
#exec('ls -t ./images/motion_detection/', $files); # They outlawed exec, so now I have to do it by hand.
if ($handle = opendir('./images/motion_detection/')) {
    $files=array();
    while (false !== ($file = readdir($handle))) {
        $files[$file] = preg_replace('/[^0-9]/', '', $file); # Timestamps may not be unique, file names are.
    }
    closedir($handle);
    arsort($files);
    $files=array_keys($files);
}
?>

Before you go copying someone's bloat kitchen sink function/class, consider what you have and what you really need.
php at uchange dot co dot uk 05-Dec-2008 09:36
Having spent an hour or so trying to get a complete list of files from a network share on Windows, I've given up (Apache 2.2 Win32, WinXP, PHP5 -> Windows 2000 R2).

Trying to use a mapped drive letter gives me an error and trying to use the UNC path works but is dog slow (it takes a couple of minutes to open and readdir() a directory with a couple of hundred files).

Using this code is fast and instant (you'll have to chop up the output yourself but so be it!)

$out = `dir $dir /B /S`;

If you don't need recursive subdirectories remove the /S from the command - for more details run 'dir /?' on Windows.

Hope this helps somebody in a similar fix!
archipel dot gb at online dot fr 22-Jun-2008 10:20
Here are two versions of the same function to list all files in a directory tree.

The first one is recursive (calls itself while going through subdirectories) :
<?php
function rec_listFiles( $from = '.')
{
    if(! is_dir($from))
        return false;
   
    $files = array();
    if( $dh = opendir($from))
    {
        while( false !== ($file = readdir($dh)))
        {
            // Skip '.' and '..'
            if( $file == '.' || $file == '..')
                continue;
            $path = $from . '/' . $file;
            if( is_dir($path) )
                $files += rec_listFiles($path);
            else
                $files[] = $path;
        }
        closedir($dh);
    }
    return $files;
}
?>

The second one is iterative (uses less memory) :
<?php
function listFiles( $from = '.')
{
    if(! is_dir($from))
        return false;
   
    $files = array();
    $dirs = array( $from);
    while( NULL !== ($dir = array_pop( $dirs)))
    {
        if( $dh = opendir($dir))
        {
            while( false !== ($file = readdir($dh)))
            {
                if( $file == '.' || $file == '..')
                    continue;
                $path = $dir . '/' . $file;
                if( is_dir($path))
                    $dirs[] = $path;
                else
                    $files[] = $path;
            }
            closedir($dh);
        }
    }
    return $files;
}
?>
The iterative version should be a little faster most of the time, but the big difference is in the memory usage.

Here is also a profiling function (works in php5 only) :
<?php
function profile( $func, $trydir)
{
    $mem1 = memory_get_usage();
    echo '<pre>-----------------------
Test run for '.$func.'() ...
'; flush();

    $time_start = microtime(true);
    $list = $func( $trydir);
    $time = microtime(true) - $time_start;

    echo 'Finished : '.count($list).' files</pre>';
    $mem2 = memory_get_peak_usage();

    printf( '<pre>Max memory for '.$func.'() : %0.2f kbytes
Running time for '.$func.'() : %0.f s</pre>',
    ($mem2-$mem1)/1024.0, $time);
    return $list;
}
?>
kdouglas at satarah dot com 15-May-2008 04:22
Breadth-first-search (BFS) for a file or directory (vs. Depth-first-search)
http://en.wikipedia.org/wiki/Breadth-first_search

<?php

// Breadth-First Recursive Directory Search, for a File or Directory
// with optional black-list paths and optional callback function.
//
// $root -- is the relative path to the start-of-search directory
// $file -- is the qualified file name: 'name.ext' EX: 'data.xml'
//    (or) $file -- is the target directory name EX: 'xml_files'
// $callback -- is an optional function name and will be passed all
//    matching paths EX: 'my_func', instead of exiting on first match
// $omit -- is an optional array of exclude paths -- relative to root
//    To use $omit but not $callback, pass NULL as the $callback argument
//
// TESTING VALUES FOLLOW ...

function my_func ( $path ) {
  print "<strong>$path</strong><br>\n";
}

$root = '../public_html';
$file = 'data.xml';
$callback = 'my_func';
$omit = array( 'include/img', 'include/css', 'scripts' );

//print breadth_first_file_search ( $root, $file );
//print breadth_first_file_search ( $root, $file, $callback );
//print breadth_first_file_search ( $root, $file, NULL, $omit );
print breadth_first_file_search ( $root, $file, $callback, $omit );

function breadth_first_file_search ( $root, $file, $callback = NULL, $omit = array() ) {
  $queue = array( rtrim( $root, '/' ).'/' ); // normalize all paths
  foreach ( $omit as &$path ) { // &$path Req. PHP ver 5.x and later
    $path = $root.trim( $path, '/' ).'/';
  }
  while ( $base = array_shift( $queue ) ) {
    $file_path = $base.$file;
    if ( file_exists( $file_path ) ) { // file found
      if ( is_callable( $callback ) ) {
        $callback( $file_path ); // callback => CONTINUE
      } else {
        return $file_path; // return file-path => EXIT
      }
    }
    if ( ( $handle = opendir( $base ) ) ) {
      while ( ( $child = readdir( $handle ) ) !== FALSE ) {
        if ( is_dir( $base.$child ) && $child != '.' && $child != '..' ) {
          $combined_path = $base.$child.'/';
          if ( !in_array( $combined_path, $omit ) ) {
            array_push( $queue, $combined_path);
          }
        }
      }
      closedir( $handle );
    } // else unable to open directory => NEXT CHILD
  }
  return FALSE; // end of tree, file not found
}

?>
Peter Hkansson 11-Dec-2007 09:01
Would you like to view your directories in your browser this script might come in handy.

<?php
$sub = ($_GET['dir']);
$path = 'enter/your/directory/here/';
$path = $path . "$sub";
$dh = opendir($path);
$i=1;
while (($file = readdir($dh)) !== false) {
    if($file != "." && $file != "..") {
            if (substr($file, -4, -3) =="."){
            echo "$i. $file <br />";
            }else{           
        echo "$i. <a href='?dir=$sub/$file'>$file</a><br />";
          }
        $i++;
    }
}
closedir($dh);
?>
mana at averna dot com 07-Dec-2007 03:02
I was trying to access network drives using this opendir function. I read so many posts saying that it was almost impossible to access a network drive and finally, I found the answer; there are 2 steps to be followed to access a network drive with PHP either on the same machine or another machine.

But first of all, here's the error I was getting:
Warning: opendir(\\server\folder1\sub_folder) [function.opendir]: failed to open dir: No error in C:\wamp\www\PMOT\v0.1\REPORT_MENU\index.php on line 17

Firstly, one must make sure that the folder \\server\folder1\sub_folder can be accessed by a user, let's say USER_TEST with a password PASS_TEST. By setting properties to this folder, one can add this given user with the correct password (USER_TEST with PASS_TEST).

Secondly, the APACHE service must be set-up to take this user into account. If no user is specified, APACHE uses an anonymous user and this is where the problem/error message is coming from. One must go in control panel->administrative tools->services. One will see the list of services and must look for APACHE with Apache/2.X.X in the description. (For Wampserver, it will be called wampapache, and so on!) Right click on that and pop up the properties screen. In the tab LOG ON, there are 2 options: local system account and "this account" which will be a user specified account. This is where one must specify the USER_TEST and PASS_TEST.

Following these steps worked perfectly for me but if either the folder privileges or apache log on user is disabled, then I get the initial aforementioned error message.

Anyways, I hope this can help out someone!

Cheers!

Marc
MetaNull 04-Oct-2007 11:39
An other way to recursively walk a directory and it's content, applying a callback to each file.

Exemple: Update the last modification time of each file in a folder

<?php

clearstatcache();

$sourcepath = "C:/WINDOWS/TEMP";

// Replace \ by / and remove the final / if any
$root = ereg_replace( "/$", "", ereg_replace( "[\\]", "/", $sourcepath ));
// Touch all the files from the $root directory
if( false === m_walk_dir( $root, "m_touch_file", true )) {
    echo "'{$root}' is not a valid directory\n";
}

// Walk a directory recursivelly, and apply a callback on each file
function m_walk_dir( $root, $callback, $recursive = true ) {
    $dh = @opendir( $root );
    if( false === $dh ) {
        return false;
    }
    while( $file = readdir( $dh )) {
        if( "." == $file || ".." == $file ){
            continue;
        }
        call_user_func( $callback, "{$root}/{$file}" );
        if( false !== $recursive && is_dir( "{$root}/{$file}" )) {
            m_walk_dir( "{$root}/{$file}", $callback, $recursive );
        }
    }
    closedir( $dh );
    return true;
}

// if the path indicates a file, run touch() on it
function m_touch_file( $path ) {
    echo $path . "\n";
    if( !is_dir( $path )) {
        touch( $path );
    }
}

?>
lolwut 13-May-2007 06:00
I sometimes find this useful. Hope you will too.

<?php
//list_by_ext: returns an array containing an alphabetic list of files in the specified directory ($path) with a file extension that matches $extension

function list_by_ext($extension, $path){
    $list = array(); //initialise a variable
    $dir_handle = @opendir($path) or die("Unable to open $path"); //attempt to open path
    while($file = readdir($dir_handle)){ //loop through all the files in the path
        if($file == "." || $file == ".."){continue;} //ignore these
        $filename = explode(".",$file); //seperate filename from extenstion
        $cnt = count($filename); $cnt--; $ext = $filename[$cnt]; //as above
        if(strtolower($ext) == strtolower($extension)){ //if the extension of the file matches the extension we are looking for...
            array_push($list, $file); //...then stick it onto the end of the list array
        }
    }
    if($list[0]){ //...if matches were found...
    return $list; //...return the array
    } else {//otherwise...
    return false;
    }
}

//example usage
if($win32_exectuables = list_by_ext("exe", "C:\WINDOWS")){
    var_dump($win32_exectuables);
} else {
    echo "No windows executables found :(\n";
}

?>
Michael mt1955 (a) gmail.com 11-May-2007 07:59
# simple directory walk with callback function

<?php
function callbackDir($dir)
{
   # do whatever you want here
   echo "$dir\n";
}

function walkDir($dir,$fx)
{
  $arStack = array();
  $fx($dir);
  if( ($dh=opendir($dir)) )
  { while( ($file=readdir($dh))!==false )
    { if( $file=='.' || $file=='..' ) continue;
      if( is_dir("$dir/$file") )
      { if( !in_array("$dir/$file",$arStack) ) $arStack[]="$dir/$file";
      }
    }
    closedir($dh);
  }
  if( count($arStack) )
  { foreach( $arStack as $subdir )
    { walkDir($subdir,$fx);
    }
  }
}

walkDir($root,callBackDir);
?>
NerdyDork 08-Feb-2007 08:36
Here is a snippet to create a site map of all html files in a folder:

<?php
    // read all html file in the current directory
    if ($dh = opendir('./')) {
        $files = array();
        while (($file = readdir($dh)) !== false) {
            if (substr($file, strlen($file) - 5) == '.html') {
                array_push($files, $file);
            }
        }
        closedir($dh);
    }
   
    // Sort the files and display
    sort($files);
    echo "<ul>\n";
    foreach ($files as $file) {
        $title = Title($file);
        echo "<li><a href=\"$file\" title=\"$title\">$title</a></li>\n";
    }
    echo "</ul>\n";
   
    // Function to get a human readable title from the filename
    function Title($filename) {
        $title = substr($filename, 0, strlen($filename) - 5);
        $title = str_replace('-', ' ', $title);
        $title = ucwords($title);
        return $title;
    }
?>
frogstarr78 at yahoo dot com 21-Jan-2007 12:30
Here's a function that will recrusively turn a directory into a hash of directory hashes and file arrays, automatically ignoring "dot" files.

<?php
function hashify_directory($topdir, &$list, $ignoredDirectories=array()) {
    if (is_dir($topdir)) {
        if ($dh = opendir($topdir)) {
            while (($file = readdir($dh)) !== false) {
                if (!(array_search($file,$ignoredDirectories) > -1) && preg_match('/^\./', $file) == 0) {
                    if (is_dir("$topdir$file")) {
                        if(!isset($list[$file])) {
                            $list[$file] = array();
                        }
                        ksort($list);
                        hashify_directory("$topdir$file/", $list[$file]);
                    } else {
                        array_push($list, $file);
                    }
                }
            }
            closedir($dh);
        }
    }
}
?>

e.g.
<?php
$public_html["StudentFiles"] = array();
hashify_directory("StudentFiles/", $public_html["StudentFiles"]);
?>
on the directory structure:
./StudentFiles/tutorial_01/case1/file1.html
./StudentFiles/tutorial_01/case1/file2.html
./StudentFiles/tutorial_02/case1/file1.html
./StudentFiles/tutorial_02/case2/file2.html
./StudentFiles/tutorial_03/case1/file2.html
etc...
becomes:
<?php
print_r($public_html);
/*
outputs:
array(
  "StudentFiles" => array (
        "tutorial_01" => array (
              "case1" => array( "file1.html", "file2.html")
        ),
        "tutorial_02" => array (
              "case1" => array( "file1.html"),
              "case2" => array( "file2.html")
        ),
       "tutorial_03" => array (
              "case1" => array( "file2.html")
       )
  )
)
*/
?>
I'm using it to create a tree view of a directory.
phpguy at mailstop dot yogelements dot omitme dot com 13-Dec-2006 01:40
An issue that I ran into is that opendir() could care less if you've got server authentication set on sub directories and so any such authentication is bypassed completely when accesses in this way. I did solve it for my application of a pretty file manager, by redirecting to all sub directories thusly:
$fdir = "./subdirectory_I_want_to_visit/";
if ($fdir != './') { //basically where we are or the parent
    //redirect the browser to force authentication check on any subdirectories
    header("Location: http://my.domain.com".dirname($_SERVER["PHP_SELF"]).substr($fdir,2));
    exit;
} else {
    $dir = opendir($fdir);
}
tim2005 13-May-2006 05:04
Hello,

A friend of mine is running a webhost, I think i found a security leak with this script:

<?php
function select_files($dir, $label = "", $select_name, $curr_val = "", $char_length = 30) {
    $teller = 0;
    if ($handle = opendir($dir)) {
        $mydir = ($label != "") ? "<label for=\"".$select_name."\">".$label."</label>\n" : "";
        $mydir .= "<select name=\"".$select_name."\">\n";
        $curr_val = (isset($_REQUEST[$select_name])) ? $_REQUEST[$select_name] : $curr_val;
        $mydir .= ($curr_val == "") ? "  <option value=\"\" selected>...\n" : "<option value=\"\">...\n";
        while (false !== ($file = readdir($handle))) {
            $files[] = $file;
        }
        closedir($handle);
        sort($files);
        foreach ($files as $val) {
            if (is_file($dir.$val)) { // show only real files (ver. 1.01)
                $mydir .= "    <option value=\"".$val."\"";
                $mydir .= ($val == $curr_val) ? " selected>" : ">";
                $mydir .= (strlen($val) > $char_length) ? substr($val, 0, $char_length)."...\n" : $val."\n";
                $teller++;   
            }
        }
        $mydir .= "</select>";
    }
    if ($teller == 0) {
        $mydir = "No files!";
    } else {
        return $mydir;
    }
}

echo select_files("C:/winnt/", "", "", "", "60");
?>

Now i can see hist files in his windows dir. Is this a leak? and is it fixable? I'll report this as bug too!

Tim2005
tozeiler 15-Apr-2006 01:34
"opendir" said:
------------------------------------------------------------------

23-Jan-2006 08:04
I Just wanted a directory list and a clickable link to download the files

<snip>
------
<?
echo ("<h1>Directory Overzicht:</h1>");

function getFiles($path) {

<snip complicated function contents>

------------------------------------------------------------------
Here's a more straightforward way to linkify $path/files:

<?php

echo "<h1>Directory Overzicht:</h1>";

$dh = opendir($path);
while (($file = readdir($dh)) !== false) {
    echo "<a href='$path/$file'>$file</a><br />";
}
closedir($dh);

?>
23-Jan-2006 07:04
I Just wanted a directory list and a clickable link to download the files because my plesk server does not give me this function. I edited the script a little bit.

Many thanks from a script-noob

------
<?
echo ("<h1>Directory Overzicht:</h1>");

function getFiles($path) {
   //Function takes a path, and returns a numerically indexed array of associative arrays containing file information,
   //sorted by the file name (case insensitive).  If two files are identical when compared without case, they will sort
   //relative to each other in the order presented by readdir()
   $files = array();
   $fileNames = array();
   $i = 0;
  
   if (is_dir($path)) {
       if ($dh = opendir($path)) {
           while (($file = readdir($dh)) !== false) {
               if ($file == "." || $file == "..") continue;
               $fullpath = $path . "/" . $file;
               $fkey = strtolower($file);
               while (array_key_exists($fkey,$fileNames)) $fkey .= " ";
               $a = stat($fullpath);
               $files[$fkey]['size'] = $a['size'];
               if ($a['size'] == 0) $files[$fkey]['sizetext'] = "-";
               else if ($a['size'] > 1024) $files[$fkey]['sizetext'] = (ceil($a['size']/1024*100)/100) . " K";
               else if ($a['size'] > 1024*1024) $files[$fkey]['sizetext'] = (ceil($a['size']/(1024*1024)*100)/100) . " Mb";
               else $files[$fkey]['sizetext'] = $a['size'] . " bytes";
               $files[$fkey]['name'] = $file;
               $files[$fkey]['type'] = filetype($fullpath);
               $fileNames[$i++] = $fkey;
           }
           closedir($dh);
       } else die ("Cannot open directory:  $path");
   } else die ("Path is not a directory:  $path");
   sort($fileNames,SORT_STRING);
   $sortedFiles = array();
   $i = 0;
   foreach($fileNames as $f) $sortedFiles[$i++] = $files[$f];
  
   return $sortedFiles;
}

$files = getFiles("./");
foreach ($files as $file) print "&nbsp;&nbsp;&nbsp;&nbsp;<b><a href=\"$file[name]\">$file[name]</a></b><br>\n";
?>
mstabile75 at gmail dot com 28-Dec-2005 08:26
In my previous post I ran into a problem with the "global" definition of $directorylist.  If I called the function more than once on the same page it would combine the file lists. I looked at Lasse Dalegaard's example and used the following solution.

remove global definition
     global $directorylist;

REPLACE
<?
if ((($maxlevel) == "all") or ($maxlevel > $level)) {
   filelist($startdir . $file . "/", $searchSubdirs, $directoriesonly, $maxlevel, $level + 1);
}
?>
WITH
<?
if ((($maxlevel) == "all") or ($maxlevel > $level)) {
    $list2 = filelist($startdir . $file . "/", $searchSubdirs, $directoriesonly, $maxlevel, $level + 1);
    if(is_array($list2)) {
        $directorylist = array_merge($directorylist, $list2);
    }
}
?>
mstabile75 at gmail dot com 27-Dec-2005 07:04
<?php
/* The below function will list all folders and files within a directory
It is a recursive function that uses a global array.  The global array was the easiest
way for me to work with an array in a recursive function
*This function has no limit on the number of levels down you can search.
*The array structure was one that worked for me.
ARGUMENTS:
$startdir => specify the directory to start from; format: must end in a "/"
$searchSubdirs => True/false; True if you want to search subdirectories
$directoriesonly => True/false; True if you want to only return directories
$maxlevel => "all" or a number; specifes the number of directories down that you want to search
$level => integer; directory level that the function is currently searching
*/
function filelist ($startdir="./", $searchSubdirs=1, $directoriesonly=0, $maxlevel="all", $level=1) {
    //list the directory/file names that you want to ignore
    $ignoredDirectory[] = ".";
    $ignoredDirectory[] = "..";
    $ignoredDirectory[] = "_vti_cnf";
    global $directorylist;    //initialize global array
    if (is_dir($startdir)) {
        if ($dh = opendir($startdir)) {
            while (($file = readdir($dh)) !== false) {
                if (!(array_search($file,$ignoredDirectory) > -1)) {
                 if (filetype($startdir . $file) == "dir") {
                       //build your directory array however you choose;
                       //add other file details that you want.
                       $directorylist[$startdir . $file]['level'] = $level;
                       $directorylist[$startdir . $file]['dir'] = 1;
                       $directorylist[$startdir . $file]['name'] = $file;
                       $directorylist[$startdir . $file]['path'] = $startdir;
                       if ($searchSubdirs) {
                           if ((($maxlevel) == "all") or ($maxlevel > $level)) {
                               filelist($startdir . $file . "/", $searchSubdirs, $directoriesonly, $maxlevel, $level + 1);
                           }
                       }
                   } else {
                       if (!$directoriesonly) {
                           //if you want to include files; build your file array 
                           //however you choose; add other file details that you want.
                         $directorylist[$startdir . $file]['level'] = $level;
                         $directorylist[$startdir . $file]['dir'] = 0;
                         $directorylist[$startdir . $file]['name'] = $file;
                         $directorylist[$startdir . $file]['path'] = $startdir;
      }}}}
           closedir($dh);
}}
return($directorylist);
}
$files = filelist("./",1,1); // call the function
foreach ($files as $list) {//print array
    echo "Directory: " . $list['dir'] . " => Level: " . $list['level'] . " => Name: " . $list['name'] . " => Path: " . $list['path'] ."<br>";
}?>
chrys at mytechjournal dot com 10-Dec-2005 11:16
I wrote a function to recursively delete files from a starting directory.  I had to do this because my server doesn't allow me to delete files that apache writes because I don't have permissions, so... I let apache do the work.

<?php
$dir = "/path/to/base/dir";

recursive_delete($dir);

function recursive_delete( $dir )
{
        if (is_dir($dir)) {
           if ($dh = opendir($dir)) {
               while (($file = readdir($dh)) !== false ) {
                        if( $file != "." && $file != ".." )
                        {
                                if( is_dir( $dir . $file ) )
                                {
                                        echo "Entering Directory: $dir$file<br/>";
                                        recursive_delete( $dir . $file . "/" );
                                        echo "Removing Directory: $dir$file<br/><br/>";
                                        rmdir( $dir . $file );
                                }
                                else
                                {
                                        echo "Deleting file: $dir$file<br/>";
                                        unlink( $dir . $file );
                                }
                        }
               }
               closedir($dh);
           }
        }
}
?>
05-Oct-2005 09:40
This function sorts files by name as strings, but without regard to case.  It also does some handy string formatting of the file size information.

<?
function getFiles($path) {
    //Function takes a path, and returns a numerically indexed array of associative arrays containing file information,
    //sorted by the file name (case insensitive).  If two files are identical when compared without case, they will sort
    //relative to each other in the order presented by readdir()
    $files = array();
    $fileNames = array();
    $i = 0;
   
    if (is_dir($path)) {
        if ($dh = opendir($path)) {
            while (($file = readdir($dh)) !== false) {
                if ($file == "." || $file == "..") continue;
                $fullpath = $path . "/" . $file;
                $fkey = strtolower($file);
                while (array_key_exists($fkey,$fileNames)) $fkey .= " ";
                $a = stat($fullpath);
                $files[$fkey]['size'] = $a['size'];
                if ($a['size'] == 0) $files[$fkey]['sizetext'] = "-";
                else if ($a['size'] > 1024) $files[$fkey]['sizetext'] = (ceil($a['size']/1024*100)/100) . " K";
                else if ($a['size'] > 1024*1024) $files[$fkey]['sizetext'] = (ceil($a['size']/(1024*1024)*100)/100) . " Mb";
                else $files[$fkey]['sizetext'] = $a['size'] . " bytes";
                $files[$fkey]['name'] = $file;
                $files[$fkey]['type'] = filetype($fullpath);
                $fileNames[$i++] = $fkey;
            }
            closedir($dh);
        } else die ("Cannot open directory:  $path");
    } else die ("Path is not a directory:  $path");
    sort($fileNames,SORT_STRING);
    $sortedFiles = array();
    $i = 0;
    foreach($fileNames as $f) $sortedFiles[$i++] = $files[$f];
   
    return $sortedFiles;
}

$files = getFiles("C:");
foreach ($files as $file) print "$file[name]<br>\n";
?>
Lasse Dalegaard 21-May-2005 12:25
I made a function for finding all files in a specified directory and all subdirectories. It can be quite usefull when searching in alot of files in alot subdirectories. The function returns an array with the path of all the files found.

<?
function getFiles($directory) {
    // Try to open the directory
    if($dir = opendir($directory)) {
        // Create an array for all files found
        $tmp = Array();

        // Add the files
        while($file = readdir($dir)) {
            // Make sure the file exists
            if($file != "." && $file != ".." && $file[0] != '.') {
                // If it's a directiry, list all files within it
                if(is_dir($directory . "/" . $file)) {
                    $tmp2 = getFiles($directory . "/" . $file);
                    if(is_array($tmp2)) {
                        $tmp = array_merge($tmp, $tmp2);
                    }
                } else {
                    array_push($tmp, $directory . "/" . $file);
                }
            }
        }

        // Finish off the function
        closedir($dir);
        return $tmp;
    }
}

// Example of use
print_r(getFiles('.')); // This will find all files in the current directory and all subdirectories
?>
iamnotanerd 29-Mar-2005 09:38
Here is a snippet of the code that I created to search for a file..recursively open the directories and search for a match..

<?php
function search($target, $directory){
    
    if(is_dir($directory)){
        $direc = opendir($directory);
        while(false !== ($file = readdir($direc))){
           
            if($file !="." && $file != ".."){

                if(is_file($directory."/".$file)){
                    if(preg_match("/$target/i", $file)){
                                            echo "<a href=\"$directory/$file\">$file</a><br>";
                                        }
                }else if(is_dir($directory."/".$file)){
                    search($target,$directory."/".$file);
                   
                }

            }
        }
        closedir($direc);
    }

    return ;
}
?>
sandy at montana-riverboats dot com 29-Sep-2004 09:08
<?php
/*
** This recursive file lister only slurps in one page at time,
** so it doesn't take forever to load when operating over
** a large system.....comes with an "Up" link for every page too.
*/

$PHP_SELF = $_SERVER['PHP_SELF'];
$DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];
# activate the next line (and deactivate the last) to
# use this script in a $DOCUMENT_ROOT/~anybody
# environment.
#$DOCUMENT_ROOT="/home/sandy/public_html/";

$tdir = $_GET['dir'];
echo "tdir==$tdir<br>";
$tparent_path = $_GET['parent_path'];
$dbg = $_GET['dbg'];

if(!strstr($tdir, $DOCUMENT_ROOT))
  $tdir = getcwd();
if(!strstr($tparent_path, $DOCUMENT_ROOT))
  $tparent_path = $tdir;

if (!isset ($tdir))
  {
    $dir = getcwd ();
  }
else
  $dir = $tdir;

if (!isset ($tparent_path))
  {
    $parent_path = $dir;
  }
else
  $parent_path = $tparent_path;

echo "<br>";
if (!isset ($tdir))
  {
    $upurl = $PHP_SELF;
  }
else
  {
    if ($parent_path == $DOCUMENT_ROOT)
      $parent_parent_path = $parent_path;
    else
      $parent_parent_path = dirname ($parent_path);
    $upurl = $PHP_SELF."?dir=".$parent_path."&parent_path=".
                  $parent_parent_path;
  }

if($dbg==1)
{
  echo "PHP_SELF: $PHP_SELF<br>\n";
  echo "DOCUMENT_ROOT: $DOCUMENT_ROOT<br>\n";
  echo "dir: $dir<br>\n";
  echo "parent_path: $parent_path<br>\n";
  echo "upurl: $upurl<br>\n";
}

echo "<a href=\"$upurl\"> <h3>Up</h3> </a>\n";
echo "<h2>$dir</h2>\n";

create_tree ($dir, $parent_path);

function
urlFromPath ($path)
{
  global $PHP_SELF;
  global $DOCUMENT_ROOT;
  $prefix = "";
  if (substr ($path, 0, 1) != "/")
    $prefix = "/";
  $url = $prefix.ereg_replace ($DOCUMENT_ROOT, "", $path);
  return $url;
}

function
create_tree ($dir, $parent_path)
{
  if ($handle = opendir ($dir))
    {
      $i = 0;
      while (false !== ($file = @readdir ($handle)))
    {
      if ($file != "." && $file != "..")
        {
          $list[$i] = $file;
          $i++;
        }
    }
      $dir_length = count ($list);
      echo "<ul>";
      for ($i = 0; $i < $dir_length; $i++)
    {
      global $PHP_SELF;
      global $DOCUMENT_ROOT;
      $label = $list[$i];
      $test = $dir."/".$label;
      $alink = $dir."/".ereg_replace(" ","%20",$label);
      if (!strstr ($PHP_SELF, $label))
        {
          if (is_dir ($test))
        {
          $tmp = $PHP_SELF. "?dir=".$alink."&parent_path=".$dir;
          $url = ereg_replace(" ", "%20", $tmp);
                  echo "$url<br>\n";
          echo "<a href=\"$url\"><b>$label</b>/</a><br>\n";
        }
          else
        {
          $link = urlFromPath ($alink);

          $label = $list[$i];
          echo
            "<a href=\"$link\">".$label."</a><br>\n";
        }
        }
    }
      echo "</ul>";
      closedir ($handle);
    }
}

?>
micklweiss at gmx dot net 19-Nov-2003 01:12
I ran into a little snag in example 1. opendir() lists files by the last time the file was accessed. I was trying to print the files numerically in a directory.

Solution: Use scandir() instead (php5) or store the files in an array and sort it.

Hope this helps someone.

- Mick

(o> Web / software developer
( )     UNIX Systems Admin
---   ~ www.mickweiss.com ~
info at 4design dot nu 22-Aug-2003 06:31
In addition to notes above about IIS & PHP reading network shares, here's one solution that works better for me.

in the management console I created a folder where my "read_dir" script runs. click on properties then select the security tab. here you can set the anonymous account to the standard IUSR_$computername% , BUT.. in this case I chose another account that I set up for reading my shares. (make sure login name and password match the credantials you set on the remote machin ;-))

I use this to read a dir and it's contents into a searchable database. and it works like a charm...
Matt Grimm 06-Jun-2003 01:25
Thought I could help clarify something with accessing network shares on a Windows network (2000 in this case), running PHP 4.3.2 under Apache 2.0.44.

However you are logged into the Windows box, your Apache service must be running under an account which has access to the share.  The easiest (and probably least safe) way for me was to change the user for the Apache service to the computer administrator (do this in the service properties, under the "Log On" tab).  After restarting Apache, I could access mapped drives by their assigned drive letter ("z:\\") or regular shares by their UNC path ("\\\\shareDrive\\shareDir").

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