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Verzeichnis-Funktionen

<<Vordefinierte Konstanten

chdir>>


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Verzeichnis-Funktionen

Siehe auch

Für verwandte Funktionen wie zum Beispiel dirname(), is_dir(), mkdir() und rmdir(), lesen Sie auch das Filesystem-Kapitel.

Inhaltsverzeichnis


9 BenutzerBeiträge:
- Beiträge aktualisieren...
Ant P.
13.09.2009 1:01
A simple reminder, but one most people (me included) will forget:

If you're writing portable code, don't blindly assume URLs and filesystem paths have a 1:1 mapping! There could be any number of things affecting them - the server might have mod_rewrite rules, you could be in a chroot, PHP could even be running over FastCGI on a separate machine from the webserver entirely.

Also don't rely on relative paths just because you think your own code hasn't called chdir(); you can use dirname($_SERVER[SCRIPT_FILENAME]) to figure out where you should be.
billy
18.02.2008 22:22
msh at onliners dot dk's code should have

$dir.'/'.$entry everywhere instead of $dir.$entry

you need your system's directory separator, otherwise you'll get /my/pathfilename instead of correctly /my/path/filename
Jean-Paul Wattiaux
1.09.2007 5:08
Mine works as long as the samba volume is actually mounted. Having it listed in the "My Computer" window doesn't warrant that.
adrian
20.08.2007 23:33
Samba mounts under a Windows environment are not accessible using the mounted drive letter. For instance, if you have drive X: in Windows mounted to //example.local/shared_dir (where example.local is a *nix box running Samba), the following constructs

$dir = "X:\\data\\";
$handle = opendir( $dir );
or
$d = dir( $dir );

will return a warning message "failed to open dir: No error"

On the other hand, using the underlying mapping info works just fine. For example:

$dir = "//example.local/shared_dir/data";
$handle = opendir( $dir );
or
$d = dir( $dir );

Both cases do what they're expected to.
phdwight at yahoo dot com
28.03.2007 5:45
I have posted this same observation in scandir, and found out that it is not limited to scandir alone but to ALL directory functions.

Directory functions DOES NOT currently supports Japanese characters.
dkflbk at nm dot ru
15.09.2006 1:29
I wrote a simple backup script which puts all files in his folder (and all of the sub-folders) in one TAR archive...
(It's classic TAR format not USTAR, so filename and path to it can't be longer then 99 chars)
<?php
/***********************************************************
 *   Title:  Classic-TAR based backup script v0.0.1-dev
  **********************************************************/

Class Tar_by_Vladson {
    var
$tar_file;
    var
$fp;
    function
Tar_by_Vladson($tar_file='backup.tar') {
       
$this->tar_file = $tar_file;
       
$this->fp = fopen($this->tar_file, "wb");
       
$tree = $this->build_tree();
       
$this->process_tree($tree);
       
fputs($this->fp, pack("a512", ""));
       
fclose($this->fp);
    }
    function
build_tree($dir='.'){
       
$handle = opendir($dir);
        while(
false !== ($readdir = readdir($handle))){
            if(
$readdir != '.' && $readdir != '..'){
               
$path = $dir.'/'.$readdir;
                if (
is_file($path)) {
                   
$output[] = substr($path, 2, strlen($path));
                } elseif (
is_dir($path)) {
                   
$output[] = substr($path, 2, strlen($path)).'/';
                   
$output = array_merge($output, $this->build_tree($path));
                }
            }
        }
       
closedir($handle);
        return
$output;
    }
    function
process_tree($tree) {
        foreach(
$tree as $pathfile ) {
            if (
substr($pathfile, -1, 1) == '/') {
               
fputs($this->fp, $this->build_header($pathfile));
            } elseif (
$pathfile != $this->tar_file) {
               
$filesize = filesize($pathfile);
               
$block_len = 512*ceil($filesize/512)-$filesize;
               
fputs($this->fp, $this->build_header($pathfile));
               
fputs($this->fp, file_get_contents($pathfile));
               
fputs($this->fp, pack("a".$block_len, ""));
            }
        }
        return
true;
    }
    function
build_header($pathfile) {
        if (
strlen($pathfile) > 99 ) die('Error');
       
$info = stat($pathfile);
        if (
is_dir($pathfile) ) $info[7] = 0;
       
$header = pack("a100a8a8a8a12A12a8a1a100a255",
           
$pathfile,
           
sprintf("%6s ", decoct($info[2])),
           
sprintf("%6s ", decoct($info[4])),
           
sprintf("%6s ", decoct($info[5])),
           
sprintf("%11s ",decoct($info[7])),
           
sprintf("%11s", decoct($info[9])),
           
sprintf("%8s", " "),
            (
is_dir($pathfile) ? "5" : "0"),
           
"",
           
""
           
);
       
clearstatcache();
       
$checksum = 0;
        for (
$i=0; $i<512; $i++) {
           
$checksum += ord(substr($header,$i,1));
        }
       
$checksum_data = pack(
           
"a8", sprintf("%6s ", decoct($checksum))
            );
        for (
$i=0, $j=148; $i<7; $i++, $j++)
           
$header[$j] = $checksum_data[$i];
        return
$header;
    }
}

header('Content-type: text/plain');
$start_time = array_sum(explode(chr(32), microtime()));
$tar = & new Tar_by_Vladson();
$finish_time = array_sum(explode(chr(32), microtime()));
printf("The time taken: %f seconds", ($finish_time - $start_time));
?>
engin bzzzt biz
1.02.2006 21:07
To join directory and file names in a cross-platform manner you can use the following function.

function join_path()
{
        $num_args = func_num_args();
        $args = func_get_args();
        $path = $args[0];
       
        if( $num_args > 1 )
        {
            for ($i = 1; $i < $num_args; $i++)
            {
                $path .= DIRECTORY_SEPARATOR.$args[$i];
            }
        }
       
        return $path;
}

It should do the following:
$src = join_path( '/foo', 'bar', 'john.jpg' );
echo $src; // On *nix -> /foo/bar/john.jpg

$src = join_path( 'C:\www', 'domain.com', 'foo.jpg' );
echo $src; // On win32 -> C:\\www\\domain.com\\foo.jpg
msh at onliners dot dk
30.01.2006 12:49
I would like to present these two simple functions for generating a complete directory listing - as I feel the other examples are to restrictive in terms of usage.

function dirTree($dir) {
    $d = dir($dir);
    while (false !== ($entry = $d->read())) {
        if($entry != '.' && $entry != '..' && is_dir($dir.$entry))
            $arDir[$entry] = dirTree($dir.$entry.'/');
    }
    $d->close();
    return $arDir;
}

function printTree($array, $level=0) {
    foreach($array as $key => $value) {
        echo "<div class='dir' style='width: ".($level*20)."px;'>&nbsp;</div>".$key."<br/>\n";
        if(is_array($value))
            printTree($value, $level+1);
    }
}

Usage is as simple as this:
$dir = "<any directory you like>";
$arDirTree = dirTree($dir);
printTree($arDirTree);

It is easy to add files to the tree also - so enjoy.
Nicolas Merlet - admin(at)merletn.org
22.01.2006 16:34
Here is a very similar function to *scandir*, if you are still using PHP4...

This recursive function will return an indexed array containing all directories or files or both (depending on parameters). You can specify the depth you want, as explained below.

<?php

// $path : path to browse
// $maxdepth : how deep to browse (-1=unlimited)
// $mode : "FULL"|"DIRS"|"FILES"
// $d : must not be defined
 
function searchdir ( $path , $maxdepth = -1 , $mode = "FULL" , $d = 0 )
{
   if (
substr ( $path , strlen ( $path ) - 1 ) != '/' ) { $path .= '/' ; }     
  
$dirlist = array () ;
   if (
$mode != "FILES" ) { $dirlist[] = $path ; }
   if (
$handle = opendir ( $path ) )
   {
       while (
false !== ( $file = readdir ( $handle ) ) )
       {
           if (
$file != '.' && $file != '..' )
           {
              
$file = $path . $file ;
               if ( !
is_dir ( $file ) ) { if ( $mode != "DIRS" ) { $dirlist[] = $file ; } }
               elseif (
$d >=0 && ($d < $maxdepth || $maxdepth < 0) )
               {
                  
$result = searchdir ( $file . '/' , $maxdepth , $mode , $d + 1 ) ;
                  
$dirlist = array_merge ( $dirlist , $result ) ;
               }
       }
       }
      
closedir ( $handle ) ;
   }
   if (
$d == 0 ) { natcasesort ( $dirlist ) ; }
   return (
$dirlist ) ;
}

?>



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