zip_open

(PHP 4 >= 4.1.0, PHP 5 >= 5.2.0, PHP 7, PHP 8, PECL zip >= 1.0.0)

zip_open — Öffnet ein ZIP-Archiv

Warnung

Diese Funktion ist seit PHP 8.0.0 als DEPRECATED (veraltet) markiert. Von der Verwendung dieser Funktion wird dringend abgeraten.

Beschreibung

zip_open(string $filename): resource|int|false

Öffnet ein ZIP-Archiv für den Lesezugriff.

Parameter-Liste

filename: Der Name der zu öffnenden ZIP-Datei.

Rückgabewerte

Gibt einen Dateizeiger für die spätere Verwendung mit zip_read() und zip_close() zurück. Ist filename nicht vorhanden oder tritt ein anderer Fehler auf, wird entweder false oder die Fehlernummer zurückgegeben.

Changelog

Version	Beschreibung
8.0.0	Diese Funktion ist zugunsten der Objekt-API missbilligt; siehe ZipArchive::open().

Siehe auch

zip_read() - Liest den nächsten Eintrag innerhalb des ZIP-Archivs
zip_close() - Schließt ein ZIP-Archiv

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User Contributed Notes 13 notes

down

david at php dot net ¶

15 years ago

Note that the Zip functions return an integer error number in the event of error. So:

<?php
$zip = zip_open($file);

if ($zip) {
?>

is incorrect. Instead use:

<?php
$zip = zip_open($file);

if (is_resource($zip)) {
?>

down

saulius at solmetra dot lt ¶

17 years ago

Some older PHP versions used to return false if zip_open failed, and newer versions return the number of error (as integer), so instead of this:

$zip = zip_open($zip_file);
if ($zip) {
  // consider zip file opened successfully
}

use this:

$zip = zip_open($zip_file);
if (is_resource($zip)) {
  // consider zip file opened successfully
}

You may also use this function to get the error message by it's number:

function zipFileErrMsg($errno) {
  // using constant name as a string to make this function PHP4 compatible
  $zipFileFunctionsErrors = array(
    'ZIPARCHIVE::ER_MULTIDISK' => 'Multi-disk zip archives not supported.',
    'ZIPARCHIVE::ER_RENAME' => 'Renaming temporary file failed.',
    'ZIPARCHIVE::ER_CLOSE' => 'Closing zip archive failed', 
    'ZIPARCHIVE::ER_SEEK' => 'Seek error',
    'ZIPARCHIVE::ER_READ' => 'Read error',
    'ZIPARCHIVE::ER_WRITE' => 'Write error',
    'ZIPARCHIVE::ER_CRC' => 'CRC error',
    'ZIPARCHIVE::ER_ZIPCLOSED' => 'Containing zip archive was closed',
    'ZIPARCHIVE::ER_NOENT' => 'No such file.',
    'ZIPARCHIVE::ER_EXISTS' => 'File already exists',
    'ZIPARCHIVE::ER_OPEN' => 'Can\'t open file', 
    'ZIPARCHIVE::ER_TMPOPEN' => 'Failure to create temporary file.', 
    'ZIPARCHIVE::ER_ZLIB' => 'Zlib error',
    'ZIPARCHIVE::ER_MEMORY' => 'Memory allocation failure', 
    'ZIPARCHIVE::ER_CHANGED' => 'Entry has been changed',
    'ZIPARCHIVE::ER_COMPNOTSUPP' => 'Compression method not supported.', 
    'ZIPARCHIVE::ER_EOF' => 'Premature EOF',
    'ZIPARCHIVE::ER_INVAL' => 'Invalid argument',
    'ZIPARCHIVE::ER_NOZIP' => 'Not a zip archive',
    'ZIPARCHIVE::ER_INTERNAL' => 'Internal error',
    'ZIPARCHIVE::ER_INCONS' => 'Zip archive inconsistent', 
    'ZIPARCHIVE::ER_REMOVE' => 'Can\'t remove file',
    'ZIPARCHIVE::ER_DELETED' => 'Entry has been deleted',
  );
  $errmsg = 'unknown';
  foreach ($zipFileFunctionsErrors as $constName => $errorMessage) {
    if (defined($constName) and constant($constName) === $errno) {
      return 'Zip File Function error: '.$errorMessage;
    }
  }
  return 'Zip File Function error: unknown';
}

$zip = zip_open($zip_file);
if (!is_resource($zip)) {
  die(zipFileErrMsg($zip));
}

down

fuljencio at gmail dot com ¶

15 years ago

getting a mozilla addon version (a firefox extension, for instance):

<?php
    function get_addon_version($path)
    {
        // open zip
        $zip = zip_open($path);

            // find entry
            do {
                $entry = zip_read($zip);
            } while ($entry && zip_entry_name($entry) != "install.rdf");

            // open entry
            zip_entry_open($zip, $entry, "r");

                // read entry
                $entry_content = zip_entry_read($entry, zip_entry_filesize($entry));

                // position of <em:version>
                $version_open_pos = strpos($entry_content, "<em:version>");

                // position of </em:version>
                $version_close_pos = strpos($entry_content, "</em:version>", $version_open_pos);

                // version
                $version = substr(
                        $entry_content,
                        $version_open_pos + strlen("<em:version>"),
                        $version_close_pos - ($version_open_pos + strlen("<em:version>"))
                );

            // close entry
            zip_entry_close($entry);

        // close zip
        zip_close($zip);

        return $version;
    }
?>

down

bisqwit at iki dot fi ¶

19 years ago

If your PHP installation does not have the zip_open function, and you can't install it for whatever reason, you can use these functions instead, if the server has access to the "unzip" utility (most Linux systems do).
So far I have tested these only in Fedora Core 3.
Use at your own risk.

<?php

function ShellFix($s)
{
  return "'".str_replace("'", "'\''", $s)."'";
}

function zip_open($s)
{
  $fp = @fopen($s, 'rb');
  if(!$fp) return false;
  
  $lines = Array();
  $cmd = 'unzip -v '.shellfix($s);
  exec($cmd, $lines);
  
  $contents = Array();
  $ok=false;
  foreach($lines as $line)  
  {
    if($line[0]=='-') { $ok=!$ok; continue; }
    if(!$ok) continue;
    
    $length = (int)$line;
    $fn = trim(substr($line,58));
    
    $contents[] = Array('name' => $fn, 'length' => $length);
  }
  
  return
    Array('fp'       => $fp,  
          'name'     => $s,
          'contents' => $contents,
          'pointer'  => -1);
}                           
function zip_read(&$fp)
{
  if(!$fp) return false; 
  
  $next = $fp['pointer'] + 1;
  if($next >= count($fp['contents'])) return false;
 
  $fp['pointer'] = $next;
  return $fp['contents'][$next];
}
function zip_entry_name(&$res)
{
  if(!$res) return false;
  return $res['name'];
}                           
function zip_entry_filesize(&$res)
{
  if(!$res) return false;
  return $res['length'];
}
function zip_entry_open(&$fp, &$res)
{
  if(!$res) return false;

  $cmd = 'unzip -p '.shellfix($fp['name']).' '.shellfix($res['name']);
  
  $res['fp'] = popen($cmd, 'r');
  return !!$res['fp'];   
}
function zip_entry_read(&$res, $nbytes)
{
  return fread($res['fp'], $nbytes);
}
function zip_entry_close(&$res)
{
  fclose($res['fp']);
  unset($res['fp']);
}
function zip_close(&$fp)
{
  fclose($fp['fp']);
}
?>

down

Anonymous ¶

16 years ago

Note, this function ignores custom stream wrappers, like the ones created by stream_wrapper_register - which is really too bad.

down

robert at cotran dot ca ¶

19 years ago

The zip_entry_read above is wrong.  Since the file was opened with popen, you have to read the file in chunks, so zip_entry_read should read:

function zip_entry_read(&$res, $nbytes)
{
    $contents = '';
    while (!feof($res['fp'])) {
        $contents .= fread($res['fp'], 8192);
    }
    return $contents;
}

Otherwise, it was a very useful library.  Thanks!

down

ohcc at 163 dot com ¶

8 years ago

The zip archive will NOT be saved on disk before ZipArchive::close() is called. (ZipArchive::close will be called automatically at the end of the script if you don't write that code.)

If you want to delete a file after adding it to the zip archive, you should delete it after ZipArchive::close() is called. Otherwise, the file will be deleted before actually being added into the archive, which will make your zip archive fail to be saved.

<?php
    $za = new ZipArchive();
    $za->open('./xc.zip', ZipArchive::CREATE|ZipArchive::OVERWRITE);
    $file = './notes.txt';
    if( true === $za->addFile($file)){
        unlink($file);
    }
    if(!$za->close()){
        echo 'failure.';
    }
?>

down

ponsho ¶

18 years ago

For bisqwit at iki dot fi solution of alternative functions there's just one problem when trying to read the file thats because some bug in fread when handling from popen so it just load 8192 bytes here's the function corrected.

<?php

    function zip_entry_read(&$res, $nbytes)
    {
     while ($s = fgets($res['fp'],1024)) {
     $data  .= $s;
     }
      return $data;
    }
?>

down

flominator at gmx dot net ¶

17 years ago

@bisqwit at iki dot fi: If you're using older versions of PHP this skript might only read the first 8192 bytes. Great thing, anyway!

down

barbarinasv at interfree dot it ¶

19 years ago

Function zip_entry_read() written by "bisqwit at iki dot fi" has to be modified to read entire files:

<?php
function zip_entry_read(&$res, $nbytes) {
    while (!feof($res['fp'])) {
        $contents .= fread($res['fp'], $nbytes);
    }
    return $contents;
}
?>

down

-1

alban dot lopez+php dot net at gmail dot com ¶

17 years ago

See this class to make, read Infos or extract ZIP archive.
see EasyArchive.class.php on http://ajaxbrowser.free.fr/ to manage like that ZIP, GZIP, BZIP and TAR archive.

<?
$ARCHIVE = new zip;

$ARCHIVE->makeZip('./','./toto.zip'); // make an ZIP archive
var_export($ARCHIVE->infosZip('./toto.zip'), false); // get infos of this ZIP archive (without files content)
var_export($ARCHIVE->infosZip('./toto.zip')); // get infos of this ZIP archive (with files content)
$ARCHIVE->extractZip('./toto.zip', './1/'); // 

class zip
{
    public function infosZip ($src, $data=true)
    {
        if (($zip = zip_open(realpath($src))))
        {
            while (($zip_entry = zip_read($zip)))
            {
                $path = zip_entry_name($zip_entry);
                if (zip_entry_open($zip, $zip_entry, "r"))
                {
                    $content[$path] = array (
                        'Ratio' => zip_entry_filesize($zip_entry) ? round(100-zip_entry_compressedsize($zip_entry) / zip_entry_filesize($zip_entry)*100, 1) : false,
                        'Size' => zip_entry_compressedsize($zip_entry),
                        'NormalSize' => zip_entry_filesize($zip_entry));
                    if ($data)
                        $content[$path]['Data'] = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
                    zip_entry_close($zip_entry);
                }
                else
                    $content[$path] = false;
            }
            zip_close($zip);
            return $content;
        }
        return false;
    }
    public function extractZip ($src, $dest)
    {
        $zip = new ZipArchive;
        if ($zip->open($src)===true)
        {
            $zip->extractTo($dest);
            $zip->close();
            return true;
        }
        return false;
    }
    public function makeZip ($src, $dest)
    {
        $zip = new ZipArchive;
        $src = is_array($src) ? $src : array($src);
        if ($zip->open($dest, ZipArchive::CREATE) === true)
        {
            foreach ($src as $item)
                if (file_exists($item))
                    $this->addZipItem($zip, realpath(dirname($item)).'/', realpath($item).'/');
            $zip->close();
            return true;
        }
        return false;
    }
    private function addZipItem ($zip, $racine, $dir)
    {
        if (is_dir($dir))
        {
            $zip->addEmptyDir(str_replace($racine, '', $dir));
            $lst = scandir($dir);
                array_shift($lst);
                array_shift($lst);
            foreach ($lst as $item)
                $this->addZipItem($zip, $racine, $dir.$item.(is_dir($dir.$item)?'/':''));
        }
        elseif (is_file($dir))
            $zip->addFile($dir, str_replace($racine, '', $dir));
    }
}
?>

down

-1

xsign dot dll at clansuite dot com ¶

16 years ago

If you want to simply extract a strain of a zip file, then use this func. Maybe it helps:

<?php
/**
* This method unzips a directory within a zip-archive
* 
* @author Florian 'x!sign.dll' Wolf
* @license LGPL v2 or later
* @link http://www.xsigndll.de
* @link http://www.clansuite.com
*/

function extractZip( $zipFile = '', $dirFromZip = '' )
{    
    define(DIRECTORY_SEPARATOR, '/');

    $zipDir = getcwd() . DIRECTORY_SEPARATOR;
    $zip = zip_open($zipDir.$zipFile);

    if ($zip)
    {
        while ($zip_entry = zip_read($zip))
        {
            $completePath = $zipDir . dirname(zip_entry_name($zip_entry));
            $completeName = $zipDir . zip_entry_name($zip_entry);
            
            // Walk through path to create non existing directories
            // This won't apply to empty directories ! They are created further below
            if(!file_exists($completePath) && preg_match( '#^' . $dirFromZip .'.*#', dirname(zip_entry_name($zip_entry)) ) )
            {
                $tmp = '';
                foreach(explode('/',$completePath) AS $k)
                {
                    $tmp .= $k.'/';
                    if(!file_exists($tmp) )
                    {
                        @mkdir($tmp, 0777);
                    }
                }
            }
            
            if (zip_entry_open($zip, $zip_entry, "r"))
            {
                if( preg_match( '#^' . $dirFromZip .'.*#', dirname(zip_entry_name($zip_entry)) ) )
                {
                    if ($fd = @fopen($completeName, 'w+'))
                    {
                        fwrite($fd, zip_entry_read($zip_entry, zip_entry_filesize($zip_entry)));
                        fclose($fd);
                    }
                    else
                    {
                        // We think this was an empty directory
                        mkdir($completeName, 0777);
                    }
                    zip_entry_close($zip_entry);
                }
            }
        }
        zip_close($zip);
    }
    return true;
}

// The call to exctract a path within the zip file
extractZip( 'clansuite.zip', 'core/filters' );
?>

down

-4

strefrextor at gmail [.] com ¶

15 years ago

my basic extract zip file function

<?php
    function ezip($zip, $hedef = '')
    {
        $root = $_SERVER['DOCUMENT_ROOT'];
        $zip = zip_open($root . $zip);
        while($zip_icerik = zip_read($zip)):
            $zip_dosya = zip_entry_name($zip_icerik);
            if(strpos($zip_dosya, '.')):
                $hedef_yol = $root . $hedef . 'x/'.$zip_dosya;
                touch($hedef_yol);
                $yeni_dosya = fopen($hedef_yol, 'w+');
                fwrite($yeni_dosya, zip_entry_read($zip_icerik));
                fclose($yeni_dosya); 
            else:
                @mkdir($root . $hedef . 'x/'.$zip_dosya);
            endif;
        endwhile;
    }
    
    ezip('files.zip', 'unzip_files/');
?>

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