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Dateisystem-Funktionen

Siehe auch

Verwandte Funktionen finden Sie in den Abschnitten Verzeichnis-Funktionen und Funktionen zur Programmausführung.

Eine Liste mit Erklärungen der verschiedenen URL-Wrapper, welche Sie auch als entfernte Dateien nutzen können, finden Sie unter Unterstützte Protokolle and Wrappers.

Inhaltsverzeichnis

  • basename — Gibt letzten Namensteil einer Pfadangabe zurück
  • chgrp — Wechselt die Gruppenzugehörigkeit einer Datei
  • chmod — Ändert die Zugriffsrechte einer Datei
  • chown — Ändert den Eigentümer einer Datei
  • clearstatcache — Löscht den Status Cache
  • copy — Kopiert eine Datei
  • delete — Siehe unlink oder unset
  • dirname — Beschreibung
  • disk_free_space — Gibt verfügbaren Platz auf Dateisystem oder Partition zurück
  • disk_total_space — Gibt die Gesamtgröße eines Dateisystemes oder einer Partition zurück
  • diskfreespace — Alias von disk_free_space
  • fclose — Schließt einen offenen Dateizeiger
  • feof — Prüft, ob ein Dateizeiger am Ende der Datei steht
  • fflush — Schreibt den Ausgabepuffer in eine Datei
  • fgetc — Liest das Zeichen, auf welches der Dateizeiger zeigt
  • fgetcsv — Liest eine Zeile von der Position des Dateizeigers und prüft diese auf Komma-Separierte-Werte (CSV)
  • fgets — Liest eine Zeile von der Position des Dateizeigers
  • fgetss — Liest eine Zeile von der Position des Dateizeigers und entfernt HTML Tags.
  • file_exists — Prüft, ob eine Datei oder ein Verzeichnis existiert
  • file_get_contents — Liest die gesamte Datei in einen String
  • file_put_contents — Write a string to a file
  • file — Liest eine komplette Datei in ein Array
  • fileatime — Liefert Datum und Uhrzeit des letzten Zugriffs auf eine Datei
  • filectime — Liefert Datum und Uhrzeit der letzten Änderung des Datei Inode
  • filegroup — Liefert die Gruppenzugehörigkeit einer Datei
  • fileinode — Liefert die Inode-Nummer einer Datei
  • filemtime — Liefert Datum und Uhrzeit der letzten Dateiänderung
  • fileowner — Liefert den Dateieigentümer
  • fileperms — Liefert die Zugriffsrechte einer Datei
  • filesize — Liefert die Größe einer Datei
  • filetype — Liefert den Typ einer Datei
  • flock — Portables Datei-Sperr-Verfahren (advisory locking)
  • fnmatch — Match filename against a pattern
  • fopen — Öffnet eine Datei oder URL
  • fpassthru — Gibt alle verbleibenden Daten eines Dateizeigers direkt aus.
  • fputcsv — Format line as CSV and write to file pointer
  • fputs — Schreibt Daten an die Position des Dateizeigers
  • fread — Liest Binärdaten aus einer Datei
  • fscanf — Interpretiert den Input einer Datei entsprechend einem angegebenen Format
  • fseek — Positioniert den Dateizeiger
  • fstat — Sammelt Informationen über eine Datei mittels eines offenen Dateizeigers
  • ftell — Ermittelt die aktuelle Position des Dateizeigers
  • ftruncate — Kürzt eine Datei auf die angegebene Länge
  • fwrite — Schreibt Binärdaten in eine Datei
  • glob — Findet Dateinamen, die mit einem Muster übereinstimmen
  • is_dir — Prüft, ob der angegebene Dateiname ein Verzeichnis ist
  • is_executable — Prüft, ob der Dateiname ausführbar ist
  • is_file — Prüft, ob der Dateiname eine reguläre Datei ist
  • is_link — Prüft, ob der Dateiname ein symbolischer Link ist
  • is_readable — Prüft, ob eine Datei existiert und lesbar ist
  • is_uploaded_file — Prüft, ob die Datei mittels HTTP-POST upgeloadet wurde
  • is_writable — Prüft, ob in eine Datei geschrieben werden kann
  • is_writeable — Alias von is_writable
  • lchgrp — Changes group ownership of symlink
  • lchown — Changes user ownership of symlink
  • link — Erzeugt einen harten Link
  • linkinfo — Liefert Informationen über einen Link
  • lstat — Sammelt Informationen über eine Datei oder einen symbolischen Link
  • mkdir — Erstellt ein Verzeichnis
  • move_uploaded_file — Verschiebt eine hochgeladene Datei an einen neuen Ort
  • parse_ini_file — Analysiert eine Konfigurationsdatei
  • parse_ini_string — Parse a configuration string
  • pathinfo — Liefert Informationen über einen Dateipfad
  • pclose — Schließt einen Prozess-Dateizeiger
  • popen — Öffnet einen Prozesszeiger
  • readfile — Gibt eine Datei aus
  • readlink — Liefert das Ziel eines symbolischen Links
  • realpath_cache_get — Get realpath cache entries
  • realpath_cache_size — Get realpath cache size
  • realpath — Erzeugt einen kanonisch absoluten Pfadnamen
  • rename — Benennt eine Datei oder ein Verzeichnis um
  • rewind — Setzt den Dateizeiger auf das erste Byte der Datei
  • rmdir — Löscht ein Verzeichnis
  • set_file_buffer — Alias von stream_set_write_buffer
  • stat — Sammelt Informationen über eine Datei
  • symlink — Erzeugt einen symbolischen Link
  • tempnam — Erzeugt eine Datei mit eindeutigem Dateinamen
  • tmpfile — Erstellt eine temporäre Datei
  • touch — Setzt die Zugriffs- und Modifikationszeit einer Datei
  • umask — Changes the current umask
  • unlink — Löscht eine Datei


add a note add a note User Contributed Notes
Dateisystem
Christian
17-Mar-2007 06:24
I just learned that, to specify file names in a portable manner, you DON'T need 'DIRECTORY_SEPARATOR' - just use '/'. This really surprised and shocked me, as until now I typed about a zillion times 'DIRECTORY_SEPARATOR' to stay platform independent - unnecessary. Don't make the same mistake.
designatevoid at gmail dot com
31-Dec-2006 01:17
Here's a function that checks if a string filename, absolute or relative, is valid or not.

<?php  
function validFilename($file)
{
    if( checkCurrentOS( 'Win' )) {
        // if has invalid filename, return false
        if ( preg_match( '/PRN|CON|AUX|CLOCK\$|NUL|COM\d|LPT\d/i', $file)) {
            return false;
        }
       
        $parts = explode( "\\", $file);
       
        // if a drive letter, approve (don't check it later)
        if (preg_match( '/[A-Za-z]:/', $parts[0] )) {
            $parts[0] = null;
        }
       
        // checks for invalid printable charactors or control charactors
        foreach ($parts as $part) {
            if( preg_match( '|[\^\|\?\*<\":>/\a\b\e\f\n\r\t]|', $part )) {
                return false;
            }
        }
        return true;           
    } else { // unix always passes
        return true;
    }
}
 
function checkCurrentOS($operatingSystem)
{
    $currentOS = substr( php_uname(), 0, 7 ) == "Windows" ? "Win" : "_Nix";
    if ( strcmp( $operatingSystem, $currentOS ) == 0 ) {
        return true;
    } else {
        return false;
    }
}
?>
php_net at diamondsea dot com
15-Nov-2006 06:10
Correction to previous posts's code (had $fp instead of $url on second line)

<?php

$url = "http://nu-imaging.com/catalog/"; // here we have redirect to /catalog/1/
$fp = fopen($url);
echo fread($fp, 1024); // we get content of /catalog/1/
fclose($fp);

?>
16-Aug-2006 08:11
Note that file functions automatically handle HTTP response codes, and in case of "Location" header you will get content of new reloacated page:

<?php

$url = "http://nu-imaging.com/catalog/"; // here we have redirect to /catalog/1/
$fp = fopen($fp);
echo fread($fp, 1024); // we get content of /catalog/1/
fclose($fp);

?>
hello at nospam4methanks dot com
03-Aug-2006 10:31
<?php

// faster "fcountext" function

function extCount ($dir) {

  if (is_dir ($dir)) {

    $g = glob ($dir . '/*.*');
    foreach ($g as $v) {
      $this = pathinfo($v);
      $e[] = $this['extension'];
    }

    // return extension count
    return count(array_unique($e));
    // alternately, you could return an array of the extensions found -
    return array_values(array_unique($e));

  }

  // otherwise
  return false;

}

?>
tim at astolat dot it
04-Jun-2006 05:16
Sorry, important typo in previous post:
$dodgychars = "[^0-9a-zA-z()_-]";
should be (notice captial Z)
$dodgychars = "[^0-9a-zA-Z()_-]";
tim at astolat dot it
04-Jun-2006 08:03
Little function to sanitize a user supplied file name, and optionally force a file extension:

function sanitize_filename($filename, $forceextension="")
{
  /*
  1. Remove leading and trailing dots
  2. Remove dodgy characters from filename, including spaces and dots except last.
  3. Force extension if specified
  */
 
  $defaultfilename = "none";
  $dodgychars = "[^0-9a-zA-z()_-]"; // allow only alphanumeric, underscore, parentheses and hyphen
 
  $filename = preg_replace("/^[.]*/","",$filename); // lose any leading dots
  $filename = preg_replace("/[.]*$/","",$filename); // lose any trailing dots
  $filename = $filename?$filename:$defaultfilename; // if filename is blank, provide default

  $lastdotpos=strrpos($filename, "."); // save last dot position
  $filename = preg_replace("/$dodgychars/","_",$filename); // replace dodgy characters
  $afterdot = "";
  if ($lastdotpos !== false) { // Split into name and extension, if any.
    $beforedot = substr($filename, 0, $lastdotpos);
    if ($lastdotpos < (strlen($filename) - 1))
      $afterdot = substr($filename, $lastdotpos + 1);
  }
  else // no extension
    $beforedot = $filename;

  if ($forceextension)
    $filename = $beforedot . "." . $forceextension;
  elseif ($afterdot)
    $filename = $beforedot . "." . $afterdot;
  else
    $filename = $beforedot;

  return $filename;
}
echo sanitize_filename("..file<>@**()name.ddd.badextension", "extension")."\n";
echo sanitize_filename("..file<>@**()name.extension.ddd")."\n";
echo sanitize_filename("...", "extension")."\n";
echo sanitize_filename("...")."\n";
echo sanitize_filename("filename")."\n";
echo sanitize_filename("filename", "extension")."\n";
echo sanitize_filename(".xyz...xxx..", "extension")."\n";
echo sanitize_filename(".xyz...xxx..", "")."\n";

produces

file_____()name_ddd.extension
file_____()name_extension.ddd
none.extension
none
filename
filename.extension
xyz__.extension
xyz__.xxx
codatrix at yahoo dot com
05-Apr-2006 06:58
The following underlisted function called "fcountext" is a function I wrote, for counting the number of file extensions within a given directory. Hope you find it satisfactory as there is no alternative solution via PHP's core filesystem's functions for counting the number of file extensions within a given directory.

<?php

    /*
    * Author: ORUNTA C. N.
    * Email: codatrix@yahoo.com
    *
    * Name: fcountext()
    * Function: To count the number of file extensions within a given directory.
    * Argument(s): $dir, i.e. directory path - for e.g. 'htdocs/yahoo/'
    * Return-type: Integer
    */
   
    function fcountext($dir)
    {
        //Authenticate - if directory?
        if(is_dir($dir)) {
           
            //Open and establish directory handle/pointer
            $dp = opendir($dir);
           
            //Create extensible array
            $afile = array();
           
            //Set initializer array;
            $i = 0;
           
            //Read contents of directory into array $afile, thus:
            while($content = readdir($dp)) {
               
                //Concatenate filepath
                $filepath = $dir.$content;
               
                //Confirm any initial value within array...
                if(!count($afile)) {
               
                    //Authenticate - if file?
                    if(is_file($filepath)) {
                   
                        //Get extension using PHP's 'pathinfo'
                        $pathinfo = pathinfo($filepath);
                       
                        //Store into the array
                        $afile[$i] = $pathinfo['extension'];
                    }
                   
                } else {
               
                    //Authenticate - if file?
                    if(is_file($filepath)) {
                   
                        //Get extension using PHP's 'pathinfo'
                        $pathinfo = pathinfo($filepath);
                       
                        //Count array into $len
                        $len = count($afile);
                       
                        //Compare $pathinfo['extension'] with elements of array $afile
                        for($i=0; $i<$len; $i++) {
                            if($afile[$i] != $pathinfo['extension']) $stat = 'T';
                            else {
                                $stat = 'F';
                                break;
                            }
                        }
                       
                        //If Status is true, then store into array
                        if($stat == 'T') {
                            $afile[$len] = $pathinfo['extension'];
                        }
                    }
                }
            }
       
            //Count total no. of different extensions.
            $extnum = count($afile);
           
            //Return no. of ext.
            return $extnum;
           
            //Close directory
            closedir($dp);
       
        } else {
       
            //Return no Value
            return 'Invalid Directory';
        }
    }

?>

The above function can be incorporated as you deem fit into a class situation to be accessed publicly.
wsuttonjr at hyponiqs dot com
15-Oct-2005 09:26
Here's a little function I wrote that I thought someone might find useful.  Ever notice those fancy breadcrumbed headings on Web sites such as Macromedia.com?  Ever say, "I want one, but I don't want to write the HTML in each time?"  Well, here you go.  This does that based on your directory structure.

Do note, however, that it only works if you use files and folders that are named like:
/my-folder/my-file.php
/my_folder/my_file.php
/My_Folder/My_File.php
/My-Folder/My-File.php
...and the variable <i>$path</i> must be similarly formatted.  A preceding forward slash (/) must be on that <i>$path</i>.  $_SERVER['PHP_SELF'], $_SERVER['DOCUMENT_ROOT'], and other $_SERVER variables always add that.

When I have some free time (sooner rather than later), I'm going to write a more in-depth script for this.  I just needed something simple for now.  You can expect a PHP 4 and PHP 5 script class dedicated to this one idea.  For now, this simple function does the trick.  Anyway, here you go:

<?php
function breadCrumbs($path)
{
    /**
     *  What it does is split a path string into its two base objects -- a
     *  file name and a directory name.
     * 
     *  After that, it then splits the directory into an array of sub-
     *  directories and adds them to a stack of links with keys of 'name'
     *  (directory name) and 'href' (hyperlink reference path).
     *
     *  Each item in this indexed associative array is then stacked again
     *  into an array of actual hyperlinks (i.e. <a href="Blah/Blah2.php">)
     *  split by a tree notification ( > ) of sorts.
     *
     *  Finally, the entire string, which may look like:
     *  <a href="#">Services</a> > <a href="#">Web</a>
     *  has the current file being viewed added to it.  That finished string
     *  is then returned to the calling script/function for display to the
     *  browser.
     *
     *  The returned HTML may look like:
     *  <a href="#">Services</a> > <a href="#">Web</a> > Home
     */
   
    // set the index file and name for each directory
    $dirIndex = 'Home.php';
    $dirIndexName = 'Home';
   
    // split $path into basename and dirname
    $file = basename($path, '.php');
    $dir  = dirname($path);
   
    // change all backslashes to forward slashes
    $dir  = str_replace('\\', '/', $dir);
   
    // remove preceding forward slash (/)
    $dir  = substr($dir, 1, strlen($dir));
   
    // ** ADDED **
    // add a trailing '/ ' to add a blank folder name - will be removed
    // NOTE: This is to ensure that an array IS created
    $dir .= '/ ';
   
    // split dirname into an array
    $dirs = preg_split('@\/@', $dir);
   
    // get the last array index from $dirs
    $lastIndex = count($dirs) - 1;
   
    // remove last $dirs if empty
    if ($dirs[$lastIndex] == '' || is_null($dirs[$lastIndex])) {
        unset($dirs[$lastIndex]);
    }
   
    // remove empty dir
    if ($dirs[$lastIndex] == ' ') {
        unset($dirs[$lastIndex]);
    }
   
    // get an accurate directory count
    $dirCount = count($dirs);
   
    // create $link and $links variables
    $link  = '/';
    $links = array();
   
    // stack each directory into a link and dirname
    for ($i = 0; $i < count($dirs); $i++) {
        // change $dirs[$i] into capitalized word(s) and add spaces (for
        // grammatical correctness)
        $link .= ucwords(preg_replace('@(-|_)@', ' ', $dirs[$i])) . '/';
       
        $links[$i]['href'] = $link . $dirIndex;
        $links[$i]['name'] = ucwords($dirs[$i]);
    }
   
    // instanciate $breadcrumbs array
    $breadcrumbs = array();
   
    // stack $links into HTML-equivalent links
    for ($i = 0; $i < count($links); $i++) {
        $breadcrumbs[$i] = '<a href="' . $links[$i]['href'] . '">' . $links[$i]['name'] . '</a>';
    }
   
    // see if links are needed or if a parent document
    if ($dirs[0] == '' || empty($dirs[0])) {
        // it is not so use just the file name
        $breadcrumb = $file;
    } else {
        // it is so compile the links into a breadcrumb string
        $breadcrumb  = '<a href="/' . $dirIndex . '">' . $dirIndexName . '</a> &#8212; ' . join($breadcrumbs, ' > ');
        $breadcrumb .= ' > ' . $file;
    }
   
    // return compiled breadcrumb string
    return $breadcrumb;
}
?>
Ciprian Danea, cipriandanea at yahoo dot com
28-Jul-2005 04:28
Here is a little script that will enumerate a directory (given as a string) recursively.

The main working function is get_dir($path,$max_depth='')
Optional aguments:
$max_depth : obvious it'll limit the recursive depth.
Not so optional:
$l=0 : the first call must omit this, or explicitly set it to 0, since it represents the starting depth
$total='': the current total filesize; it should also be left alone, although it autosets itself to 0 on the first call;

In order to do something with the files other than just echoing them, simply replace the echo functions with your own;

Thanks to:
dave at birko dot cjb dot net (for the nice filesize function)
vbwebprofi at gmx dot de  (for the fileperms function)

function get_dir($path,$max_depth='',$l=0,$total=''){
    if(!is_dir($path))return;
    $path=substr($path,-1)!="/"?$path."/":$path;
    if(!$l){
        echo "\nEnumerating directory $path :\n\n";
        $total=0;
    }
    if($max_depth==='' || ($max_depth>$l && is_int($max_depth))) $test_depth=true;
    else $test_depth=false;
    $pre="";
    $c=$l;
    while($c--)$pre.="\t";
    $dir=opendir($path);
    while($f=readdir($dir)){
        if($f=="."||$f=="..")continue;
        $file=$path.$f;
        $size="";
        if(is_file($file)||!is_dir($file)){
            $s=filesize($file);
            $total+=$s;
            $size="[ ".fsize($s)." ]";
            }
        else $f.="/";
        while(strlen($size)<16)
            $size=" ".$size;
        echo "\n".get_permissions(fileperms($file)).$size.$pre."\t".$f;
        if(is_dir($file) && $test_depth)
            $total=get_dir($file,$max_depth,$l+1,$total);
    }
    if(!$l)
        echo "\n\nTotal size: ".fsize($total);
    return $total;
}

function get_permissions($fperms) {
   $out;
   if($fperms & 0x1000)     // FIFO pipe
     $out = 'p';
   elseif($fperms & 0x2000) // Character outecial
     $out = 'c';
   elseif($fperms & 0x3000) // Socket [ original value 0xD000, wrong for linux, but this is also registering as a directory... ant ideas?]
     $out = 's';
   elseif($fperms & 0x4000) // Directory
     $out = 'd';
   elseif($fperms & 0x6000) // Block outecial
     $out = 'b';
   elseif($fperms & 0x8000) // Regular
     $out = '-';
   elseif($fperms & 0xA000) // Symbolic Link
     $out = 'l';
   else                         // UNKNOWN
     $out = 'u';
   // owner
   $out .= (($fperms & 0x0100) ? 'r' : '-') .
          (($fperms & 0x0080) ? 'w' : '-') .
          (($fperms & 0x0040) ? (($fperms & 0x0800) ? 's' : 'x' ) :
                                   (($fperms & 0x0800) ? 'S' : '-'));
   // group
   $out .= (($fperms & 0x0020) ? 'r' : '-') .
          (($fperms & 0x0010) ? 'w' : '-') .
          (($fperms & 0x0008) ? (($fperms & 0x0400) ? 's' : 'x' ) :
                                   (($fperms & 0x0400) ? 'S' : '-'));
   // world
   $out .= (($fperms & 0x0004) ? 'r' : '-') .
           (($fperms & 0x0002) ? 'w' : '-') .
           (($fperms & 0x0001) ? (($fperms & 0x0200) ? 't' : 'x' ) :
                                  (($fperms & 0x0200) ? 'T' : '-'));
   return $out;
 }

function fsize($size) {
       $a = array("B", "KB", "MB", "GB", "TB", "PB");
       $pos = 0;
       while ($size >= 1024) {
               $size /= 1024;
               $pos++;
       }
       return round($size,2)." ".$a[$pos];
}

//usage example
get_dir("/tmp/");    // full depth
get_dir("/tmp/",4); //maximum depth set to 4
28-May-2005 09:17
Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.) Again, please note, if you ask a question, report a bug, or request a feature, your note will be deleted.)
hans at lintoo dot dk
23-Mar-2005 05:41
PHP5 Object File

I couldn't find a File Object in PHP5, so I decided to create one myself.

When a function that needs a path requires the file it will output a temp file and return the path to it, so that ie. parse_ini_file will work with the file object using:

<?php
parse_ini_file($myFile->requireFilePath());
?>

It is avaible for download at:
http://www.lintoo.dk/public/dbase_and_file_class.zip

Hans Duedal
tunnelareaten at gmail dot com
25-Feb-2005 05:27
I made this function to search and/or display files by extension or for a string occurance in the filename. Any comments or enhancements are welcome offcourse. I'll update this function soon.

usage: list_files([string], [string], [int 1 | 0], [int 1 | 0]);

search for extension: list_files([string], [string], [0], [int 1 | 0]);
returns array: $myArray = list_files([string], [string], [0], [0]);
echo result: list_files([string], [string], [0], [1]);

search for string occurance: list_files([string], [string], [1], [int 1 | 0]);
returns array: $myArray = list_files([string], [string], [1], [0]);
echo result: list_files([string], [string], [1], [1]);

<?php

function list_files($directory, $stringSearch, $searchHandler, $outputHandler) {
 $errorHandler = false;
 $result = array();
 if (! $directoryHandler = @opendir ($directory)) {
  echo ("<pre>\nerror: directory \"$directory\" doesn't exist!\n</pre>\n");
 return $errorHandler = true;
 }
 if ($searchHandler === 0) {
  while (false !== ($fileName = @readdir ($directoryHandler))) {
   if(@substr ($fileName, - @strlen ($stringSearch)) === $stringSearch) {
    @array_push ($result, $fileName);
   }
  }
 }
 if ($searchHandler === 1) {
  while(false !== ($fileName = @readdir ($directoryHandler))) {
   if(@substr_count ($fileName, $stringSearch) > 0) {
    @array_push ($result, $fileName);
   }
  }
 }
 if (($errorHandler === true) &&  (@count ($result) === 0)) {
  echo ("<pre>\nerror: no filetype \"$fileExtension\" found!\n</pre>\n");
 }
 else {
  sort ($result);
  if ($outputHandler === 0) {
   return $result;
  }
  if ($outputHandler === 1) {
   echo ("<pre>\n");
   print_r ($result);
   echo ("</pre>\n");
  }
 }
}

?>
ben at nullcreations dot net
14-Nov-2004 11:29
Directed at: fankounter at libero dot it

Erm, I think you missed glob() which does what you're doing, only much more efficiently.

see: http://php.net/glob
fankounter at libero dot it
05-Nov-2004 03:31
// ls(dir,pattern) return file list in "dir" folder matching "pattern"
// ls("path","module.php?") search into "path" folder for module.php3, module.php4, ...
// ls("images/","*.jpg") search into "images" folder for JPG images

function ls($__dir="./",$__pattern="*.*")
{
 settype($__dir,"string");
 settype($__pattern,"string");

 $__ls=array();
 $__regexp=preg_quote($__pattern,"/");
 $__regexp=preg_replace("/[\\x5C][\x2A]/",".*",$__regexp);
 $__regexp=preg_replace("/[\\x5C][\x3F]/",".", $__regexp);

 if(is_dir($__dir))
  if(($__dir_h=@opendir($__dir))!==FALSE)
  {
   while(($__file=readdir($__dir_h))!==FALSE)
    if(preg_match("/^".$__regexp."$/",$__file))
     array_push($__ls,$__file);

   closedir($__dir_h);
   sort($__ls,SORT_STRING);
  }

 return $__ls;
}
m2pc (at) hotmail.com
07-Oct-2004 06:18
After searching all over the place to find a function to do what I wanted, I wrote the following:

  /*
  **  Returns an array of valid drives on the system (a:, b:, etc.)
  */
  function getSystemDrives () {
                         
    // Initialize
    $aResult = Array ();
 
    // Loop from A-Z and try opening the root dir
    for ($letter = 'A'; $letter <= 'Z'; $letter ++) {
      if (is_dir ($letter . ":"))
        $aResult [] = $letter . ":";
    }
   
    // Return results
    return ($aResult);
  }

It simply returns an array of valid drives as seen from the server (A:, B:, etc.).  This obviously is targeted to Win32 installations only.
Storm Reaver
13-Apr-2004 04:48
The way to write files on server where it is not possible (e.g. Gorodok.net)

<?php

 function killfile($ftp, $login, $pass, $filename){
  $conn_id = ftp_connect($ftp);
  $login_result = ftp_login($conn_id, $login, $pass);
  if ((!$conn_id) || (!$login_result)) { return false; } else {
    $del = ftp_delete($conn_id, $filename);
    if (!del) { return false; } else {return true;}
  }
  ftp_close($conn_id);
 }

killfile("gorodok.net", "login", "password", "/path/file.extension");
   // Erasing file on server
$fs = fopen("ftp://login:password@gorodok.net/path/file.extension", "w");
   // Opening file for writing
   // You can't open file 4 writing without 'killfile' function because there must be no such file on server for fopen write mode via FTP/

// Here we write what we need
  
fclose($fs);

 

?>
ken at xzone9 dot com
16-Mar-2004 09:46
The following will work on UNIX (from peeweeks code submitted for "Windows")---

function ls ($curpath) {
   $dir = dir($curpath);
   echo("<b>$curpath</b>");
   echo "<blockquote>";
   while ($file = $dir->read()) {

       if($file != "." && $file != "..") {
           if (is_dir($curpath.$file)) {
                               ls($curpath.$file."/");
             } else {
                 echo("$file<br>");
             }
       }
   }
   $dir->close();
   echo "</blockquote>";
   return;
}

//Use:

$startpath = "/home/mypath/";
ls($startpath);
http://iubito.free.fr
30-Dec-2003 01:39
Here is a function I wrote to get the relative path between 2 files or directory.

We suppose that paths are wrotten in Unix format (/ instead of windows \\)

<?php
/**
 * Return the relative path between two paths / Retourne le chemin relatif entre 2 chemins
 *
 * If $path2 is empty, get the current directory (getcwd).
 * @return string
 */
function relativePath($path1, $path2='')
{
    if ($path2 == '') {
        $path2 = $path1;
        $path1 = getcwd();
    }

    //Remove starting, ending, and double / in paths
    $path1 = trim($path1,'/');
    $path2 = trim($path2,'/');
    while (substr_count($path1, '//')) $path1 = str_replace('//', '/', $path1);
    while (substr_count($path2, '//')) $path2 = str_replace('//', '/', $path2);

    //create arrays
    $arr1 = explode('/', $path1);
    if ($arr1 == array('')) $arr1 = array();
    $arr2 = explode('/', $path2);
    if ($arr2 == array('')) $arr2 = array();
    $size1 = count($arr1);
    $size2 = count($arr2);

    //now the hard part :-p
    $path='';
    for($i=0; $i<min($size1,$size2); $i++)
    {
        if ($arr1[$i] == $arr2[$i]) continue;
        else $path = '../'.$path.$arr2[$i].'/';
    }
    if ($size1 > $size2)
        for ($i = $size2; $i < $size1; $i++)
            $path = '../'.$path;
    else if ($size2 > $size1)
        for ($i = $size1; $i < $size2; $i++)
            $path .= $arr2[$i].'/';

    return $path;
}
?>

Enjoy ! :-)
Gregor Mosheh
23-Aug-2003 02:23
This function searches a directory and returns an array of all files whose filename matches the specified regular expression. It's similar in concept to the Unix find program.

 function findfile($location='',$fileregex='') {
    if (!$location or !is_dir($location) or !$fileregex) {
       return false;
    }
 
    $matchedfiles = array();
 
    $all = opendir($location);
    while ($file = readdir($all)) {
       if (is_dir($location.'/'.$file) and $file <> ".." and $file <> ".") {
          $subdir_matches = findfile($location.'/'.$file,$fileregex);
          $matchedfiles = array_merge($matchedfiles,$subdir_matches);
          unset($file);
       }
       elseif (!is_dir($location.'/'.$file)) {
          if (preg_match($fileregex,$file)) {
             array_push($matchedfiles,$location.'/'.$file);
          }
       }
    }
    closedir($all);
    unset($all);
    return $matchedfiles;
 }

$htmlfiles = findfile('/some/dir','/\.(htm|html)$/');
Gregor Mosheh
17-Jul-2003 07:25
I needed a function to find disk usage for a directory and its subs, so here it is. It's kinda like the Unix du program, except it returns the usage in bytes, not blocks.

function du($location) {
   if (!$location or !is_dir($location)) {
      return 0;
   }

   $total = 0;

   $all = opendir($location);
   while ($file = readdir($all)) {
      if (is_dir($location.'/'.$file) and $file <> ".." and $file <> ".") {
         $total += du($location.'/'.$file);
         unset($file);
      }
      elseif (!is_dir($location.'/'.$file)) {
         $stats = stat($location.'/'.$file);
         $total += $stats['size'];
         unset($file);
      }
   }
   closedir($all);
   unset($all);
   return $total;
}

print du('/some/directory');
aggarwal_deep at hotmail dot com
16-Jul-2003 11:43
The following souce is the combination of 3 different function ,does the listing of the whole files in directories or sub-directories of a base directory(given). And find out the maximum file size of given application files. for example it will tell the maximum file size of ppt file that is placed in the directory.

<?

function showExtension($file){
 if(is_file($file)){
   $fileInfo = pathinfo($file);
   $extension=$fileInfo["extension"];
} else {
   $extension="";    
 }
 return $extension;
}

function fsize($size) {
       $a = array("B", "KB", "MB", "GB", "TB", "PB");

       $pos = 0;
       while ($size >= 1024) {
              $size /= 1024;
               $pos++;
       }

      return round($size,2)." ".$a[$pos];
}

 
    function ls ($curpath) {
        $dir = dir($curpath);
        $file_namearr = array("ETC","PPT","XLS","DOC","PDF");
       
       
        echo("<b>$curpath</b>");
        echo "<blockquote>";
        $file_sizearr = array(1,1,1,1,1);   
        while ($file = $dir->read()) {
            if($file != "." && $file != "..") {
                if (is_dir($curpath.$file)) {
                    ls($curpath.$file."/");
                }
                else  {
                    $filext=    strtoupper(showExtension($curpath.$file));
                    $curr_key = 0;
                    $curr_key = array_search($filext,$file_namearr);
                    if($curr_key){
                        //echo "<br>$filext:$curr_key";
                        $curr_file_size = $file_sizearr[$curr_key];
                        if(filesize($curpath.$file)>$curr_file_size){
                            $file_sizearr[$curr_key]= intval(filesize($curpath.$file));
                        }   
                    }
                   
                            //echo"<br> $file : ".fsize($curpath.$file);
                }
            }
           
        }//while ends
        for($k=0;$k<5;$k++){
            echo"<br>".$file_namearr[$k].":".fsize($file_sizearr[$k]); 
        }
        $dir->close();
        echo "</blockquote>";
        return;
    }
 
$startpath = "/home6/docmng/";
ls($startpath);
 
 
?>
l_domenech at yahoo dot ca
03-Jul-2003 07:25
In the code samples of the user-contributed notes, you'll find functions that sometimes need a slash at the end of a folder path and sometimes don't.

Here's a little function to append a slash at the end of a path if there isn't one already.

function append_slash_if_none($string)
    {
    if (ereg ("/$", $string))
        {
        return $string;
        }
    else
        {
        return ereg_replace("$", "/", $string);
        }
    }

(Replace with a backslash if you're on Windows...)
mitra at mitra dot biz
16-May-2003 07:10
Pollard@php.net contributed this in response to a question on setting these variables ...
This option *IS* settable within your PHP scripts.
Example:

<?php
  ini_set('auto_detect_line_endings', true);
  $contents = file('unknowntype.txt');

  ini_set('auto_detect_line_endings', false);
  $content2 = file('unixfile.txt');
?>

Note, with PHP 4.3 anytime Mac files are read using fgets or file you'll need to auto_detect_line_endings since \n is otherwise assumed.  However, with PHP 5.0, stream_get_line() will allow you to specify what line ending character to read up to.

\\ Read a line from a MAC file
stream_get_line($fp, 4096, "\r");

\\ Read a line from a UNIX file
stream_get_line($fp, 4096, "\n");

\\ Read a line from a DOS file
stream_get_line($fp, 4096, "\r\n");

\\ Read a line up to any filesystem line ending
ini_set('auto_detect_line_endings', true); fgets($fp);

\\ You can also make up your own line ending characters:
\\ Read up to the first instance of ":"
stream_get_line($fp, 4096, ":");
peeweek at altern dot org
09-May-2003 02:06
here is a function that recurses all directories in a Windows Tree then displays for each directory its contents.

function ls ($curpath) {
    $dir = dir($curpath);
    echo("<b>$curpath</b>");
    echo "<blockquote>";
    while ($file = $dir->read()) {

        if($file != "." && $file != "..") {
            if (is_dir($curpath.$file)) {
                                ls($curpath.$file."\\");
             } else {
                 echo("$file<br>");
             }
        }
    }
    $dir->close();
    echo "</blockquote>";
    return;
}

Use:

$startpath = "D:\\something\\";
ls($startpath);
regis at webstuff dot com dot br
03-Apr-2003 05:49
Here is a useful function if you're having trouble writing raw bytes into a file.

It receives an integer and returns an array containing the ASCII values of the bytes on each index of the array.

function int2bytes($number){
  $byte = $number;
  $i=0;
  do{
    $dec_tmp = $byte;
   
    $byte = bcdiv($byte,256,0);
    $resto = $dec_tmp - (256 * $byte);
    $return[] = $resto;
  } while($byte >= 256);
  if($byte) $return[] = $byte;
  return array_reverse($return);
}

Example:

$arr = int2bytes(75832);

$arr will contain the following values:
Array
(
    [0] => 1
    [1] => 40
    [2] => 56
)

Now, to write this data to the file, just use a fputs() with chr(), just like this:

fputs($fp,chr($arr[0]).chr($arr[1]).chr($arr[2]))

-- Regis
jdhurn at uberidx dot com
08-Mar-2003 04:18
This is a function I use to determine if a file contains Binary information. I use this for my search engine so that it doesn't try to index files like .zip or .mp3 or any other file that doesn't contain readable information. It makes use of the Character Type Extension if it's loaded, if it's not then it uses Regular Expressions.

function is_binary($link)
{
     $tmpStr  = '';
     @$fp     = fopen($link, 'rb');
     @$tmpStr = fread($fp, 256);
     @fclose($fp);

     if($tmpStr != '')
     {
          $tmpStr = str_replace(chr(10), '', $tmpStr);
          $tmpStr = str_replace(chr(13), '', $tmpStr);

          $tmpInt = 0;

           for($i =0; $i < strlen($tmpStr); $i++)
          {
                if( extension_loaded('ctype') )
               {
                    if( !ctype_print($tmpStr[$i]) )
                         $tmpInt++;
               }
               else
               {
                   if( !eregi("[[:print:]]+", $tmpStr[$i]) )
                         $tmpInt++;
               }
           }

           if($tmpInt > 5)
                return(0);
            else
                return(1);
     }
     else
           return(0);
}
meheler at canada dot com
07-Mar-2002 08:55
Here is a useful function that checks for the existance of a file in PHP's include_path:

    // Searches PHP's include_path variable for the existance of a file
    // Returns the filename if it's found, otherwise FALSE.
    // Only works on a *nix-based filesystem
    // Check like: if (($file = file_exists_path('PEAR.php')) !== FALSE)
    function file_exists_path($file) {
        // Absolute path specified
        if (substr($path,0,1)=='/')
            return (file_exists($file))?realpath($file):FALSE;

        $paths = explode(':',ini_get('include_path'));
        foreach ($paths as $path) {
            if (substr($path,-1)!='/') $path = "$path/";
            if (file_exists("$path$file"))
                return realpath("$path$file");
        }
        return FALSE;
    }

Mike
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